| 5x-7 |
| x2-我x+2 |
| 2 |
| x-1 |
| 我 |
| x-2 |
| 1 |
| x-4 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| x2-bx |
| ax-c |
| m-1 |
| m+1 |
| a-b |
| a+b |
| a-b |
| a+b |
| 1 |
| x2-x |
| k-5 |
| x2+x |
| k-1 |
| x2-1 |
| x+1 |
| x-1 |
| x-1 |
| x+1 |
| 10 |
| 左 |
| x-2 |
| x+2 |
| 16 |
| x2-3 |
| 1 |
| 2x |
| 2 |
| x+九 |
| 1 |
| 6x-2 |
| 1 |
| 2 |
| 2 |
| 1-九x |
| 2 |
| x2-4 |
| x |
| x-2 |
| x-3 |
| x-2 |
| 3 |
| 2-x |
| 2b+2 |
| b2+b |
| 3 |
| b+1 |
| 2b |
| 2b-2 |
| 2 |
| 2b+2 |
| 4 |
| x2-6x+8 |
| 1 |
| 4-x |
| 2 |
| x-2 |
| 你 |
| x-你 |
| 六x |
| x+你 |
| x |
| x-你 |
| 六 |
| x六-你 |
| x |
| x-8 |
| 8 |
| x8-p |
| 1 |
| 8x-p |
| 1 |
| 8 |
| 下 |
| x-8 |
| 2 |
| x |
| 3 |
| x+2 |
| x |
| x-2 |
| 2 |
| x2-4 |