題目列表(包括答案和解析)
| 1 |
| 10 |
| 1 |
| 10 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| x-3 |
| x-4 |
| 3-x |
| x+4 |
| x-1 |
| 4 |
| x2-1 |
| 1 |
| a-2 |
| 1 |
| a+2 |
| 2a |
| a2-4a+4 |
| x2-2x+1 |
| x2-1 |
| x-1 |
| x2+x |
| x2+2x |
| x-3 |
| x2-4x+4 |
| x3-4x |
| x |
| 3-x |
| x-3 |
| x+3 |
| 6x |
| x2-9 |
| 1 |
| x2-9 |
| 2008 |
| 2008 |
| 2008 |
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