配套习题- 二次根式的乘法 -【青果学院】

1/5单选题

难度：

1.下列计算正确的是（）

A
B
C
D

正确答案：RA==

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2/5单选题

难度：

2.使等式

成立的条件是（）

A	a≥-2
B	a≤2
C	-2＜a＜2
D	-2≤a≤2

正确答案：RA==

6Kej562U77ya4oi1PGltZyB3aWR0aD0xODIgaGVpZ2h0PTI4IHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjgvckJBQ0ZGVEltYjZTcERZS0FBQURrVUNGWlcwMTIxLnBuZyI+PGJyPuKItGErMjxpbWcgd2lkdGg9ODIgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvRTkvckJBQ0oxVEltYjdEbkpEV0FBQUIyQ1NQMDg0OTkwLnBuZyI+PGJyPuKItC0y4omkYeKJpDIgPGJyPuaVhemAiUQ=

3/5单选题

难度：

3.若

，

，则xy的值为（）

A
B
C	a+b
D	a-b

正确答案：RA==

6Kej562U77ya4oi1PGltZyB3aWR0aD0xMDcgaGVpZ2h0PTMyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvRTkvckJBQ0oxVEltY0doVFktNEFBQUNpLTE3WUVBMTc1LnBuZyI+77yMPGltZyB3aWR0aD05MyBoZWlnaHQ9MzAgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC83My8xRS9yQkFDRTFUSW1jR2o5WUM1QUFBQ2p6YndONVk5NDcucG5nIj4gPGJyPuWImXh555qE5YC85Li6PTxpbWcgd2lkdGg9NjQgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNzMvMUUvckJBQ0UxVEltY0tnOHVFeUFBQUNNODRFWG1jMTkyLnBuZyI+KDxpbWcgd2lkdGg9NTEgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNzMvMUUvckJBQ0UxVEltY0tCZjRYUEFBQUI3emhSSmE0NzQ5LnBuZyI+KT08aW1nIHdpZHRoPTE0MCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BQS8yOC9yQkFDRkZUSW1jTGpCUGYzQUFBQzZHZjR1ZFkxODYucG5nIj48YnI+5pWF6YCJRA==

4/5单选题

难度：

4.计算

的结果在（）

A	1到2之间
B	2到3之间
C	3到4之间
D	4到5之间

正确答案：Qw==

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

5/5单选题

难度：

5.若把

根号外的因式移入根号内得（）

A
B
C
D

正确答案：Qw==

6Kej562U77yaPGltZyB3aWR0aD0zNyBoZWlnaHQ9MjIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BQS8yOC9yQkFDRkZUSW1jM1JfOVV6QUFBQmZRMXNXcGs2MzEucG5nIj4gPS08aW1nIHdpZHRoPTI1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzNFL0FBL3JCQUNKbFRJbWMzU0Y2NW9BQUFCcG9Ibjd5QTM2NS5wbmciPjxicj7mlYXpgIlD