当前位置:首页 > 八年级 > 数学试卷

【329288】《二次根式》同步练习3

时间:2025-01-21 12:53:07 作者: 字数:1506字
简介:

二次根式习题

双基演练

1.若a与它的绝对值的和为零,则 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> =_______

2.( <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>2=2a-3成立的条件是________

3.当x>2,化简 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> - <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> =_________

4.当x>1时,化简 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 的结果是________

5.下列各组数中,互为相反数的是( )

A-3 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> B.│-3│- <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> C.│-3│ <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> D-3 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

6.化简 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 得( )

A-5 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> B5 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> C-30 D30

7.若x为任意数,则下列各式中成立的是( )

A <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> =x2 B <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> =-x2 C <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> =x D <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> =-x


  • 能力提升

8.当x_______时, <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> =2-x成立,计算 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> =________

9.若x-8 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> =9x,则x的取值范围是_________

10.已知x<0,那么 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 的结果等于( )

Ax B-x C3x D-3x

11.若ab<0,则二次根式 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 化简为( )

Aa <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> Ba <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> C-a <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> D-a <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

12.若-3≤x≤2时,试化简│x-2│+ <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>






13.实数P在数轴上的位置如图所示,化简 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> + <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> =________

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>






  • 聚焦中考

14.当a_______时, <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a>

15.若 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ,则a3的关系是(  )。

A a3    B  a≤3   C a3   D a≥3

16.实数在数轴上位置如图所示:

化简 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> ____________


组合 619









答案:

10 2a≥ <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> 3-x-1 4x-1

5D 6B 7A 1

8.≤2 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/896/" title="根式" class="c1" target="_blank">根式</a> -3 9x≤0 10D 11B 1210-x

131 14. ≥0 15. B 16.2 a





《【329288】《二次根式》同步练习3.doc》
将本文的Word文档下载到电脑,方便收藏和打印
推荐度:
点击下载文档
一键复制下载文档联系客服
直接下载
单次下载
0.5元/次
微信支付
免费下载
公众号:试卷家复制
复制微信公众,搜索即可关注!
关注微信公众号获取验证码
欢迎使用微信支付
扫一扫支付
金额:
常见问题

请登录之后再下载!

下载中心

您的账号注册成功!密码为:123456,当前为默认信息,请及时修改

下载文件立即修改

帮助中心

如何获取自己的订单号?

打开微信,找到微信支付,找到自己的订单,就能看到自己的交易订单号了。

阅读并接受《用户协议》
注:各登录账户无关联!请仅用一种方式登录。


用户注册协议

一、 本网站运用开源的网站程序平台,通过国际互联网络等手段为会员或游客提供程序代码或者文章信息等服务。本网站有权在必要时修改服务条款,服务条款一旦发生变动,将会在重要页面上提示修改内容或通过其他形式告知会员。如果会员不同意所改动的内容,可以主动取消获得的网络服务。如果会员继续享用网络服务,则视为接受服务条款的变动。网站保留随时修改或中断服务而不需知照会员的权利。本站行使修改或中断服务的权利,不需对会员或第三方负责。

关闭