题目列表(包括答案和解析)
| x2 |
| x1 |
| x1 |
| x2 |
| 5 |
| 2 |
| x2 |
| x1 |
| x1 |
| x2 |
| x22+x12 |
| x1x2 |
| (x1+x2)2-2x1x2 |
| x1x2 |
| ||
| 2 |
| 9 |
| 8 |
| x2 |
| x1 |
| x1 |
| x2 |
| 9 |
| 8 |
| x2 |
| x1 |
| x1 |
| x2 |
| 5 |
| 2 |
| x2 |
| x1 |
| x1 |
| x2 |
| x22+x12 |
| x1x2 |
| (x1+x2)2-2x1x2 |
| x1x2 |
| ||
| 2 |
| 9 |
| 8 |
| x2 |
| x1 |
| x1 |
| x2 |
| 9 |
| 8 |
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