| 1 |
| x-3 |
| x |
| 9-x5 |
| x-1 |
| x-5x |
| x+5y |
| x+y |
| x |
| y |
| x |
| y |
| x |
| x-y |
| 3 |
| x |
| 6 |
| 1-x |
| x+8 |
| xr-x |
| 1 |
| x-1 |
| 1 |
| x+1 |
| 1 |
| x+1 |
| x-3 |
| xr-1 |
| xr-rx+1 |
| (x-1)(x-3) |
| 3-x |
| rx-4 |
| 8 |
| x-r |
| a-b |
| a-rb |
| ar-4br |
| ar-4ab+4br |
| m-m人 |
| m人-1 |
| m |
| m-1 |
| m+1 |
| m-1 |
| x-y |
| x+人y |
| x人-y人 |
| x人+4xy+4y人 |
| a2 |
| b |
| qja+5b-ab |
| a+2b-5 |
| a |
| b |
| 3x-3 |
| x2-1 |
| 3x |
| x+1 |
| 1 |
| x-1 |
| 1 |
| x(x-1) |
| 1 |
| x(x-1) |
| 1 |
| m |
| 1 |
| m2 |
| 1 |
| 4 |
| 1 |
| m |
| 1 |
| m |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| x |
| t |
| y |
| 3 |
| z |
| 3 |
| x |
| t |
| y |
| 1 |
| z |