| 5-x |
| x-三 |
| 1 |
| 三-x |
| 口 |
| 2x |
| 2 |
| x+3 |
| x |
| x+口 |
| 2x |
| 3x+3 |
| 口 |
| x+3 |
| 2 |
| 3-x |
| 口2 |
| x2-9 |
| 0 |
| x2+x |
| 口 |
| x2-x |
| 6 |
| x2-口 |
| 1 |
| x-2 |
| 1-x |
| 2-x |
| a2 |
| a+1 |
| 1 |
| x+1 |
| 1 |
| x |
| 5 |
| 如x+如 |
|
| 0 |
| x+3 |
| 6 |
| x0-9 |
| 5 |
| x-3 |
| 3 |
| 2x |
| 6 |
| x-1 |
| x+5 |
| x2-x |
| x-1 |
| 2 |
| x-2 |
| 3 |
| 1 |
| x+1 |
| 2 |
| 1-x |
| 5 |
| x2- 1 |
| x |
| x+2 |
| x+2 |
| x-2 |
| 8 |
| x2- 4 |
| 3x+6 |
| x2-4 |
| 2 |
| x-2 |
| 5 |
| x+1 |
| 4 |
| x |
| 1 |
| x |
| 4 |
| x+3 |
| x-3 |
| x-2 |
| 3 |
| 2 |