| 3 |
| 2 |
| 4 |
| 9 |
| b |
| 12a |
| 3c |
| 2a |
| b |
| 18c |
| b |
| 18c |
| y |
| x |
| 2(a+1) |
| a2+2a+1 |
| 2 |
| a+1 |
| 他2 |
| 5m3 |
| 10m |
| 2他 |
| 他 |
| m2 |
| 他 |
| m2 |
| 3xy |
| 4a |
| 1 |
| 8ay |
| 1 |
| 8ay |
| 4 |
| a2-1 |
| a-1 |
| 九a |
| 2 |
| 3a2+3a |
| 2 |
| 3a2+3a |
| x2-y2 |
| x |
| x-y |
| x2+xy |
| a2-v2 |
| a+v |
| 2a |
| b2 |
| 2b |
| a |
| 2b |
| a |
| 16a2 |
| b3 |
| 16a2 |
| b3 |
| a2+2ab+b2 |
| a2-2ab+b2 |
| b2-a2 |
| a+b |
| 3a2 |
| b4 |
| b3 |
| 6a |
| -3x |
| 2y2 |
| 9x2 |
| 4y6 |
| -x6x52得x |
| 65得2 |
| a2-4a+4 |
| a2-4 |
| 2x-6 |
| 4-4x+x2 |
| x+x |
| x-2 |
| x2+6x+9 |
| x-x |
| a |
| b |
| b2 |
| 2a |
| -a |
| b |
| 2a2 |
| 5b |
| a |
| 5b |