| 1 |
| x-2 |
| 1 |
| 3x |
| 1 |
| x+1 |
| 2 |
| x-1 |
| 4 |
| x2-1 |
| 2 |
| 1+x |
| 3 |
| 1-x |
| 6 |
| x2-1 |
| 2x-3 |
| x-1 |
| 2x-4 |
| 2x+3 |
| x-2 |
| x+2 |
| 3 |
| x2-4 |
| 2-x |
| x-3 |
| 2 |
| 3-x |
| 2-x |
| 3-x |
| 1 |
| 2 |
| 2 |
| x-3 |
|
| 1 |
| 2x-4 |
| 1 |
| 2 |
| 3 |
| 2-x |
| x+2 |
| x2-2x |
| x-1 |
| x2-4x+4 |
| x-4 |
| x |
| 3 |
| x |
| 2 |
| x+1 |
| 1 |
| x-2 |
| 1-x |
| 2-x |
| 如 |
| x-3 |
| x |
| 3-x |
| x |
| x-如 |
| 3 |
| (x-如)(x+2) |
| 1 |
| x-4 |
| 4 |
| xw-16 |
| 3 |
| x-1 |
| x+w |
| x(x-1) |
| 3 |
| x-2 |
| x |
| 2-x |
| x+1 |
| x-1 |
| 4 |
| x2-1 |
| 五 |
| x-2 |
| x-五 |
| 2-x |