| 左 |
| x+左 |
| 2 |
| 左-x2 |
| 1 |
| h |
| f |
| x-口 |
| f-x |
| 口-x |
| f |
| x-y |
| f |
| x+y |
| 口x |
| x口+口xy+y口 |
| 100 |
| x |
| 30 |
| x-7 |
| a-1 |
| a |
| a2-1 |
| a2+2a |
|
| 5 |
| 2x+4 |
| 1 |
| 2-x |
| 4 |
| x2-4 |
| 3-m |
| 2m-4 |
| 5 |
| m-2 |
| x |
| 2x-3 |
| 5 |
| 3-2x |
| 1 |
| x-2 |
| 3 |
| x |
| x-2 |
| x+2 |
| 16 |
| x2-4 |
| 2y |
| y-1 |
| jy-1 |
| y |
| x-2 |
| x+2 |
| x+2 |
| x-2 |
| 1如 |
| x2-4 |
| x-得 |
| x-2 |
| 得 |
| 2-x |
| x |
| x+得 |
| 2 |
| x-1 |
| x2+1 |
| x-1 |
| 3x-3 |
| x2+1 |
| 3 |
| x-1 |
| x+四 |
| x(x-1) |
| 四-x |
| x-3 |
| 1 |
| 3-x |