題目列表(包括答案和解析)
| x2-4x+4 |
| x2-2x |
| 4 |
| x |
|
| 4 |
| x2-4x+4 |
| x |
| x-2 |
| x-4 |
| x-2 |
| x2-4 |
| x2-4x+4 |
| x+2 |
| x+1 |
| x |
| x-2 |
| x2-4 |
| x2-4x+4 |
| x+2 |
| x+1 |
| x |
| x-2 |
| a |
| a-b |
| a2 |
| a2-2ab+b2 |
| a |
| a+b |
| a2 |
| a2-b2 |
| 4 |
| x+3 |
| x |
| x+1 |
| 2x |
| x+3 |
| 2x |
| x+3 |
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