| x-1 |
| 2 |
|
| 1 |
| x-2 |
| x-1 |
| x-2 |
| x-2 |
| x-3 |
| 1 |
| 2 |
| x+3 |
| 9-x2 |
| 2x |
| x+3 |
| x |
| x-1 |
| 2 |
| x2-1 |
| x-1 |
| x |
| 1-x |
| x+1 |
| 5x-5 |
| 2x+2 |
| x-1 |
| x |
| 1-x |
| x+1 |
| 5(x-1) |
| 2(x+1) |
| 1 |
| x |
| 1 |
| x+1 |
| 5 |
| 2(x+1) |
|
| 1 |
| 3x-1 |
| 4 |
| 2-6x |
| 2b+2 |
| b2+b |
| 3 |
| b+1 |
| 2b |
| 2b-2 |
| 2 |
| 2b+2 |
| 2 |
| x-3 |
| 4 |
| x |
| 3 |
| x |
| 2 |
| x-2 |
| 2 |
| x-2 |
| x |
| 2-x |
| 4 |
| x2-6x+8 |
| 1 |
| 4-x |
| 2 |
| x-2 |
| 2x+2 |
| x |
| x+2 |
| x-2 |
| x2-2 |
| x2-2x |
| 2 |
| x2-4 |
| x |
| x-2 |