| x-2 |
| x+2 |
| 16 |
| x2-4 |
| x-3 |
| x-2 |
| 3 |
| 2-x |
| 2 |
| x+1 |
| 3 |
| x-1 |
| 6 |
| x2-1 |
| x+3 |
| x-3 |
| 4 |
| xq-3 |
| 1 |
| x-3 |
| 4-x |
| 3-x |
| 4 |
| x2-4 |
| x+3 |
| x-2 |
| x-1 |
| x+2 |
| x-2 |
| x+2 |
| 16 |
| x2-4 |
| x+2 |
| x-2 |
| 1 |
| 2x |
| 2 |
| x+3 |
| x |
| x-1 |
| 3 |
| (x-1)(x+2) |
| 4-2x |
| 4-x |
| x-5 |
| x-4 |
| 3 |
| 1 |
| 2 |
| x2 |
| x+1 |
| 1 |
| x-2 |
| x-1 |
| x-2 |
| 右 |
| x+1 |
| x |
| x右-1 |
| 1-x |
| 右-x |
| 1 |
| x-右 |
| 3 |
| x-1 |
| 1 |
| x+1 |
| x2-1 |
| x |
| 1 |
| x-2 |
| 1-x |
| 2-x |