| 人2-4 |
| 人-2 |
| π+9 |
| π |
| x+y |
| x-y |
| xy-y |
| 3 |
| 3 |
| 10 |
| 2 |
| 5+y |
| 3 |
| x |
| x |
| 4xy |
| 2x-5 |
| 3 |
| 3a(a-1) |
| a |
| 2+b |
| π |
| m+n |
| m-n |
| a-b |
| 2 |
| x+3 |
| x |
| 2x |
| 3x-2y |
| x2 |
| 4 |
| a+b |
| a-b |
| 1 |
| a |
| 三xy |
| π |
| 3a三b3n |
| 4 |
| 5 |
| 6+x |
| x |
| 7 |
| y |
| 8 |
| 三x |
| x |
| 1 |
| 2 |
| 5 |
| a |
| 3 |
| 5+y |
| a |
| 2 |
| b |
| 3 |
| 2ab2c3 |
| 5 |
| 十 |
| 5 |
| 4x |
| π-3 |
| 十 |
| x |
| x地-它地 |
| 地 |
| 5x地 |
| x+十 |
| 1 |
| x |
| 1 |
| 2 |
| x2+1 |
| 他 |
| 3xn |
| π |
| 3 |
| x+n |
| a+3 |
| a-3 |
| 8 |
| 个 |
| a+b |
| 2 |
| 个 |
| 2 |
| 1 |
| 个 |
| 3 |
| y |
| 个 |
| π-3 |
| 1 |
| x |
| x |
| 2 |
| 1 |
| 3 |
| 1 |
| 2 |
| 3 |
| x+y |