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【323303】2023八年级数学上册 第5章 二次根式单元练习试卷(新版)湘教版

时间:2025-01-15 20:30:19 作者: 字数:2943字
简介:


5章《二次根式》单元练习试卷


一.选择题(共8小题)

1.下列各式中,不是二次根式的是(  )

A <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> B <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> C <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> D <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 

2.要使二次根式 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 有意义,x必须满足(  )

Ax≤2 Bx≥2 Cx2 Dx2

 

3.若代数式 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 有意义,则实数x的取值范围是(  )

Ax≠1 Bx≥0 Cx≠0 Dx≥0x≠1

 

4.当1a2时,代数式 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> +|1﹣a|的值是(  )

A.﹣1 B1 C2a﹣3 D3﹣2a

 

5.下列二次根式中属于最简二次根式的是(  )

A <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> B <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> C <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> D <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 

6.下列各根式中与 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 是同类二次根式的是(  )

A <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> B <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> C <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>1 D <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 

7.下列等式不一定成立的是(  )

A <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> = <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> b≠0 Ba3•a﹣5= <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> a≠0

Ca2﹣4b2=a+2b)(a﹣2b D.(﹣2a32=4a6

 

8.下列计算正确的是(  )

A <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> B <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

C <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> D <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 

 

二.填空题(共10小题)

9.若a≥1,则 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 的最小值是      

 

10.若 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 是二次根式,则字母x满足的条件是      

 

11.式子 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 有意义的x的取值范围是      

 

12.已知a0,化简二次根式 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 的结果是      

 

13.已知实数ab在数轴上的位置如图所示,化简 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 的结果为      

 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 

14.三角形的三边长分别为3m5,化简 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> - <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> =      

 

15.在 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 中,最简二次根式是       

 

16.观察分析下列数据:0,﹣ <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,﹣3,﹣2 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,﹣ <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>3 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,…,根据数据排列


得到第10个数据应是      (结果化为最简二次根式)

 

17.已知最简二次根式 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>2 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 可以合并,则a的值是      

 

18.在二次根式 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 中,同类二次根式是      

 

.解答题(共5小题)

 

19.计算:(1 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ; (2 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>


 





20.计算或化简:(1 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>



2 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>






2 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 1.数ab在数轴上的位置如图所示,化简: <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>






22.计算:

1 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

 





2  <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>







23.计算:(1)( <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>÷ <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> . (2 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

5章《二次根式》单元练习试卷


参考答案

 

一.选择题(共8小题)


1B 2B 3D 4B 5D 6B 7A 8B

 

二.填空题(共10小题)

9 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 10x≥- <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 11x≥- <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> x≠1 12-a <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 13-2a 142m-10


15 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 16-3 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 172 18 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>



.解答题(共5小题)


19.(1 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>2 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>


20. 1 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>2 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>


21.  <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>


22. 1 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>2 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>


23. 1 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>2 <a href="/tags/1/" title="单元" class="c1" target="_blank">单元</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>



4