| 1 |
| a |
| b |
| 3 |
| 3 |
| y+4 |
| 4m2 |
| π |
| x-1 |
| 3 |
| b二 |
| a+1 |
| 二x+y |
| π |
| 1 |
| m-二 |
| 1 |
| 二 |
| (x-y)二 |
| (x+y)二 |
| 1 |
| x |
| 它 |
| 11 |
| 1 |
| a |
| 2xy |
| π |
| 3a2b3c |
| 4 |
| 5 |
| 6x |
| x |
| 7 |
| y |
| 8 |
| x2 |
| x |
| 2 |
| x |
| 1 |
| 3 |
| x |
| π-3 |
| 5 |
| a-x |
| x+3 |
| (x+1)(x-2) |
| 1 |
| a |
| b |
| 4 |
| c |
| a-b |
| 2ab |
| π |
| x |
| x2-y2 |
| 2 |
| x |
| x+y |
| 5 |
| 小 |
| 2-a |
| x |
| π-小 |
| a+2b |
| 3 |
| 1 |
| x |
| 1 |
| x-3 |
| 5 |
| a-x |
| x |
| π-3 |
| x+y |
| 6 |
| y |
| x |
| x-y |
| a+b |
| x |
| π |
| 3x |
| 2 |
| 3x |
| 2 |
| 5b |
| 3a |
| x2+1 |
| π |
| 4 |
| x-y |