| 3 |
| x-1 |
| 2 |
| x+1 |
| 6 |
| x2-1 |
| x |
| x-2 |
| x+14 |
| x2-4 |
| 2x |
| x+2 |
| 5 |
| xz+地x |
| 1 |
| xz-x |
|
| 3 |
| 2x-2 |
| 1 |
| 1-x |
| x |
| x+2 |
| x+2 |
| x-2 |
| 8 |
| x2-4 |
| 1 |
| x+1 |
| 3 |
| 2-x |
| x+2 |
| x+1 |
| x+4 |
| x+3 |
| x+6 |
| x+5 |
| x+8 |
| x+7 |
| 2 |
| x |
| 3 |
| x+1 |
| x+1 |
| x-2 |
| 1 |
| x+1 |
| 3 |
| 2x-2 |
| 1 |
| 1-x |
| 1-x |
| x-2 |
| 1 |
| 2-x |
| x |
| x-1 |
| 2 |
| x2-1 |
| 3 |
| x-2 |
| 1-x |
| 2-x |
| 4 |
| x-3 |
| 3 |
| x-4 |
| x-5 |
| x-3 |
| x+1 |
| x-1 |
| x-2 |
| x+2 |
| 8 |
| x2-4 |
| 10 |
| 2x-1 |
| 5 |
| 1-2x |
| 2 |
| x-1 |
| 3 |
| x+1 |
| x+3 |
| x2-1 |