题目列表(包括答案和解析)
| 2 |
| xy |
| 3 |
| x+y |
| 4 |
| x-y |
| 1 |
| x2yz |
| 2 |
| xy2z |
| 3 |
| zyz2 |
| yz-2xz+3yz |
| x2y2z2 |
| yz-2xz+3yz |
| x2y2z2 |
| x |
| x-1 |
| x-1 |
| x |
| 2x-1 |
| x-1 |
| 2x-1 |
| x-1 |
| b |
| a |
| d |
| c |
| bc±ad |
| ac |
| b |
| a |
| d |
| c |
| bc±ad |
| ac |
| b |
| a |
| c |
| a |
| b±c |
| a |
| b |
| a |
| c |
| a |
| b±c |
| a |
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