1/5单选题
难度：
1.计算a2·a4的结果是( )
| A | a8 |
| B | a6 |
| C | 2a6 |
| D | 2a8 |
- 提示1：
- 5ZCM5bqV5bmC55u45LmY77yM5bqV5pWw5LiN5Y+Y77yM5oyH5pWw55u45Yqg
正确答案：Qg==
6Kej562U77yaPGltZyB3aWR0aD00MiBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9BNC9yQkFDSmxUSWtNM0I5MG9MQUFBQnRfb0gzNlU0OTYucG5nIj48c3VwPjwvc3VwPjxpbWcgd2lkdGg9MjkgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNzMvMTgvckJBQ0UxVElrTTJReF9kb0FBQUJZWVdRRmhBODY3LnBuZyI+PHN1cD48L3N1cD48YnI+PHN1cD7mlYXpgIlCPC9zdXA+
2/5单选题
难度：
2.
若32×3x=38，则x的值为( )
| A | 6 |
| B | 4 |
| C | 3 |
| D | 以上均不对 |
- 提示1：
- PHA+5ZCM5bqV5bmC55u45LmY77yM5bqV5pWw5LiN5Y+Y77yM5oyH5pWw55u45YqgPC9wPg==
正确答案：QQ==
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
3/5单选题
难度：
3.如果把(x-2y)看作一个整体，下列计算正确的是( )
| A | (x-2y)2·(2y-x)3=(x-2y)5 |
| B | (x-2y)2·(2y-x)2=-(x-2y)4 |
| C | (x-2y)2·(2y-x)3(x-2y)2=(x-2y)7 |
| D | (x-2y)2·(2y-x)3=-(x-2y)5 |
- 提示1：
- 5ZCM5bqV5bmC55u45LmY77yM5bqV5pWw5LiN5Y+Y77yM5oyH5pWw55u45Yqg
- 提示2：
- PGltZyB3aWR0aD0xNSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9BNC9yQkFDSmxUSWtOU2hpS0xfQUFBQlhPRjEyXzQwMTcucG5nIj7nmoTlgLzvvIzlj5blhrPkuo5u77yM5aWH6LSf5YG25q2j
正确答案：RA==
6Kej562U77ya4oi1PGltZyB3aWR0aD0xMzUgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMUMvckJBQ0ZGVElrTlNSZlAyREFBQUNrMWNiUThzOTMyLnBuZyI+LDxpbWcgd2lkdGg9MTQ5IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzNFL0E0L3JCQUNKbFRJa05UaUh6NDdBQUFDbm4wZzNuMDAwOS5wbmciPjxicj7mlYXpgIlE
4/5单选题
难度：
4.2m=6，
=5，则2m+n=（）
=5，则2m+n=（） | A | 11 |
| B | 30 |
| C | 36 |
| D | 以上都不对 |
- 提示1：
- 5ZCM5bqV5bmC55u45LmY77yM5bqV5pWw5LiN5Y+Y77yM5oyH5pWw55u45Yqg
正确答案：Qg==
6Kej562U77ya4oi1PGltZyB3aWR0aD05OSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9BNC9yQkFDSmxUSWtOanh1MUhoQUFBQ0Mza3VBQjAwOTIucG5nIj48YnI+4oi0PGltZyB3aWR0aD0xMTIgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvRTIvckJBQ0oxVElrTmlRX3QyVUFBQUNkVlFnOUNVNDY2LnBuZyI+PGJyPuaVhemAiUI=
5/5单选题
难度：
5.
x3·x5+x·x3·x4= （ ）
| A |
|
| B |
|
| C |
|
| D | 以上都不对 |
- 提示1：
- PHA+5ZCM5bqV5bmC55u45LmY77yM5bqV5pWw5LiN5Y+Y77yM5oyH5pWw55u45YqgPC9wPg==
正确答案：Qg==
PHA+6Kej562U77ya4oi1eDxzdXA+Mzwvc3VwPsK3eDxzdXA+NTwvc3VwPit4wrd4PHN1cD4zPC9zdXA+wrc8aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMUMvckJBQ0ZGVElrTnZRYVdkM0FBQUNDQmRMdkhvNjQxLnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BQS8xQy9yQkFDRkZUSWtOdlFhV2QzQUFBQ0NCZEx2SG82NDEucG5nIiBoZWlnaHQ9IjIxIiB3aWR0aD0iMTE5Ij48YnI+5pWF6YCJQjwvcD4=