题目内容
化简
=______;
+
=______.
| x6 |
| x3 |
| 1 |
| a |
| 2 |
| b |
| x6 |
| x3 |
| 1 |
| a |
| 2 |
| b |
| b |
| ab |
| 2a |
| ab |
| b+2a |
| ab |
故答案为:x3;
| b+2a |
| ab |
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下列各式化简正确的是( )
A、
| ||||
B、
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C、
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D、
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题目内容
| x6 |
| x3 |
| 1 |
| a |
| 2 |
| b |
| x6 |
| x3 |
| 1 |
| a |
| 2 |
| b |
| b |
| ab |
| 2a |
| ab |
| b+2a |
| ab |
| b+2a |
| ab |
A、
| ||||
B、
| ||||
C、
| ||||
D、
|