| 6! |
| o·5! |
| 1qq! |
| 98! |
| x |
| x-3 |
| x+1 |
| x-1 |
|
| 1 |
| x-1 |
| 2x |
| 1-x |
|
| x-2 |
| x+2 |
| 16 |
| x2-4 |
| m-4 |
| m2-9 |
| 14m-7 |
| m2-8m+16 |
| 1 |
| m-3 |
| 1 |
| x-e |
| 1-x |
| e-x |
| (a+1)(a-e) |
| ae-4a+4 |
| ea |
| ea-ae |
| a+1 |
| a-e |
| a2-b2 |
| a2b+ab2 |
| a2+b2 |
| 2ab |
| 3 |
| 3 |
| x |
| x-3 |
| 2 |
| 3-x |
| 2 |
| x-3 |
| x2-1 |
| x-3 |
| 3-x |
| x-4 |
| 1 |
| 4-x |
| 3 |
| x-2 |
| 1 |
| 2-x |
| 1 |
| 3 |
| 2 |
| 2x-1 |
| 5 |
| 1-2x |
| 1 |
| 2 |
| 1 |
| 3 |
| 12 |
| 3 |
| x2-1 |
| x+1 |