題目列表(包括答案和解析)
| A、(-2m+n)(-2m-n) | ||||
B、(
| ||||
| C、(x+2y-1)(x-2y+1) | ||||
| D、(a-b)(-a+b) |
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| n |
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| n+1 |
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| n+1 |
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| n |
| 1 | 2 |
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