| -3a2b |
| 3cd2 |
| 8a2c2 |
| 21bd3 |
| -2c |
| 7a |
| x2-1 |
| x2+6x+9 |
| (x+3)(x+4) |
| x+1 |
| x+2 |
| x2-6x+9 |
| 七 |
| 3-x |
| x-3 |
| x+2 |
| 1 |
| x-2 |
| 1 |
| x-2 |
| x-2 |
| x-2 |
| 4ac |
| 3b |
| 9b2 |
| 2ac3 |
| a2-4 |
| 8a2b |
| 12ab |
| 3a-6 |
| 16-a2 |
| a2-8a+16 |
| 2m+4 |
| m2-4m+4 |
| 2m-4 |
| m4-16 |
| 2x |
| 地4 |
| 地4 |
| 4x |
| x4 |
| 4 |
| 2a-6 |
| 4-4a+a2 |
| a2-4 |
| 地-a |
| ab3 |
| 2c3 |
| -5a2b2 |
| fcd |
| x2-fy2 |
| x2+2xy+y2 |
| x+2y |
| 2x2+2xy |
| 他b2 |
| 4a2 |
| -a |
| 二b |
| 二y2 |
| 9x |
| x2-x |
| x+她 |
| x2-她 |
| x2-2x+她 |
| 他ab+a2 |
| b2-a2 |
| a+他b |
| a-b |
| x+y |
| x-y |
| 1 |
| (x+y)2 |
| 它-b |
| 它2+它b |
| 它b-它2 |
| 它2b2-它4 |
| x2+7x-8 |
| 4x-x3 |
| x2-4 |
| 3x+24 |
| x2+2xy+y2 |
| xy-y2 |
| xy+y2 |
| x2-2xy+y2 |
| 1 |
| x |
| x3+x2 |
| 1-x2 |
| 1 |
| x |
| 3它 |
| 4b |
| 它-4 |
| 它2+4它+4 |
| 它2+5它+6 |
| 它2-它-2 |
| 它+3 |
| 它-2 |
| x2+xy |
| x2-xy |
| x2-xy |
| xy |
| 它2 |
| b |
| b |
| 它 |
| 1 |
| 它b |
| (x-y)2 |
| x+y |
| x2 |
| y2-x2 |
| x-1 |
| x2-x-2 |
| x2-2x+1 |
| 2-x |
| 1 |
| x2+x |
| 12xy |
| 5a |