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【330555】第16章复习1

时间:2025-02-09 11:38:40 作者: 字数:1671字
  1. 二次根式

一、填空题(每小题4分,共32分)

1、当x ________时, <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> 在实数范围内有意义.

2、计算:- <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> 2 =________.

3、化简: = _______.

4、计算: <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> × <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> =________.

5、化简: <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> =_______.

6计算: <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> ÷ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> =_______.

7、计算: <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> - <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> - <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> =_______.

8化简:( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> )( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> - <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> = ______.


二、选择题(每小题4分,共32分)

9x为何值时, <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> 在实数范围内有意义

Ax > 1 Bx 1 Cx < 1 Dx 1

10、若= - a ,则a的取值范围是

A a>0 B a<0 C a0 Da0

11、若 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> = 4,则(a - 22 的值为

A4 B12 C100 D196

12、下列二次根式中,最简二次根式的是

A  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> B  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> C  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> D <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a>

13、已知a=5b=12,则的值是

A17 B13 C±17 D±13

14、下列计算正确的是

A <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> = <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> B2+ <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> =2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a>

C <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> · <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> = <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> D <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> = <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a>

15、若x < 2化简+|3-x|的结果是

A-1 B1 C2x-5 D5-2x

16、计算( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> -1)( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> +1)2 的结果

A <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> +1 B3( <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> -1) C1 D-1

  1. 解答题(每小题9分,共36分)

17、计算:  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> -  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> -2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> -  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> .





18、计算: 2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> + 3 2007 · 2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> - 3 2008.






19、利用计算器探索填空:

1 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> =_______ 2 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> =_______

3 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> =_______ ……

由此猜想:

 <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> (被开方数内有2n4n8 =__________.

20、已知x + <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> = <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> ,求x -  <a href="/tags/14/" title="复习" class="c1" target="_blank">复习</a> 的值.