| x+1 |
| x2-4 |
| x+1 |
| x2+4x+4 |
| x-2 |
| 2x+2 |
| x |
| 2(x-1) |
| a+b |
| ab |
| a |
| b |
| b |
| a |
| 1 |
| 3 |
| 1 |
| 2 |
| w2 |
| w-1 |
| 2w+1 |
| 1-w |
| w2÷w |
| w-1 |
| x |
| x-1 |
| x2-2x |
| x2+2x+1 |
| x+1 |
| x-2 |
| 2 |
| a+3 |
| a-2 |
| 1 |
| 2-a |
| a2-4 |
| 3 |
| a2 |
| a-b |
| b2 |
| a2-2ab+b2 |
| a+b |
| a2-b2 |
| 3 |
| 3 |
| x+2 |
| x2-2x |
| x-1 |
| x2-4x+4 |
| x-4 |
| x |
| 3 |
| m |
| m+1 |
| 6 |
| m2-1 |
| 2 |
| m-1 |
| 2 |
| a2+3a |
| a2+2a+1 |
| a+3 |
| a+1 |
| 1 |
| a+1 |