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1、学习好资料欢迎下载2011 秋南安市梅岭中学二次根式单元测试题班级姓名座号成绩一、选择题：（每小题 2 分，共 26 分）1、下列代数式中，属于二次根式的为（）A、B、C、(a1)D、2、在二次根式，中，x 的取值范围是（）A、x1 B、x1 C、x1 D、x1 3、已知（x1）2 =0，则（xy）2的算术平方根是（）A、1 B、1 C、1 D、0 4、下列计算中正确的是（）A、B、C、D、5、化简=（）A、B、C、D、6、下列二次根式：，其中是最简二次根式的有（）A、2 个B、3 个C、1 个D、4 个7、若等式成立，则 m 的取值范围是（）A、mB、m3 C、m3 D、m3 8、已知直角三
2、角形有两条边的长分别是3cm，4cm，那么第三条边的长是（）A、5cm B、cm C、5cm 或cm D、cm 9、把二次根式化简，得（）A、x2xy B、C、D、43x1a211x2y532yxyx2)(aa1132433121561306156306a5.03aba221a411222yxnm2312312mmmm2121775224yxxyxxxyx1222yxx学习好资料欢迎下载10、下列各组二次根式中，属于同类二次根式的为（）A、和 B、和 C、和 D、和11、如果 a1，那么化简 =（）A、B、C、D、12、下列各组二次根式中，x 的取值范围相同的是（）A、与B、（）2与C、与D、
3、与13、化简（）2，得（）A、2 B、4 4x C、4x4 D、2 二、填空题：（每小题 3 分，共 36 分）14、用“”或“”符号连接：（1）；（2）；（3）15、的相反数是，绝对值是，（）2=16、如果最简二次根式与是同类二次根式，那么a 的值是17、计算：=；（）2=；=18、当 x 时，二次根式有意义；当 x 时，代数式有意义19、若 1x2，则化简=20、化简下列二次根式：（1）=；（2）=21、如果等式成立，那么 x 的取值范围是22、若有意义，则 x 的值是23、化简：=；=；=24、计算：=；=2ba222ab1a1a12213)1(a1)1(aaaa1)1(1)1(aaaa
4、1)1(x1xx2x12x22x1xx11442xx32x537233623753535333aa27248?312)5(13xxx 122)1()2(xx2318yxmx421112?xxxxx33224211yxyx2385aba22183文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3
5、Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2
6、 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6
7、W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P1
8、0 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R
9、4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F
10、10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码
11、:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10学习好资料欢迎下载25、如果 xy=5,xy=1,那么 =三、解答题：（2630题各 4 分，3133 题各 6 分，共 38 分）26、计算：27、计算：28、计算：29、计算：yxyx22xy)323125.0()48(81aababaab313272232321418122)65()154(5333yxxyxy?文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 H
12、J4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6
13、S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10
14、ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M
15、4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10
16、文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:C
17、X9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6
18、H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10学习好资料欢迎下载30、计算：31、是否存在实数m，使最简二次根式与是同类二次根式？若存在，求出 m的值；若不存在，请说明理由。32、先化简，再求值：，其中 x=2)23()25)(25(2mm26xxxx12)1111(2文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU
19、8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J
20、1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档
21、编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9
22、V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2
23、A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4
24、B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8
25、P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10学习好资料欢迎下载2011 秋南安市梅岭中学二次根式测试题（二）参考答案一、CDACB ABCDB DCA 二、14、（1）；（2）；（3）15、，16、2 17、；5 18、x；x1 且 x0 19、32x 20、（1）3xy ；（2）21、x1 22、3 23、；24、；25、5 三、26、27、28、29、3
26、0、31、解：不存在实数 m，使最简二次根式与是同类二次根式理由是：若与是同类二次根式，则m 2=26m 这时，m=14。而当 m=14时，与都不是最简二次根式32、原式化简得，当 x=时，原式=33、AC=cm，AB=cm 35535614383131x2mmn2212yx310ba 2833102411aab 323232xyyx28152622mm262mm262mm2611x22122)26(文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2
27、A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4
28、B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8
29、P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU
30、8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J
31、1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档
32、编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10文档编码:CX9V3Z6H2A2 HJ4B6W6S8P10 ZU8R4M4J1F10