| 1 |
| a |
| 1 |
| b |
| 2a+3ab-2b |
| a-2ab-b |
| 1 |
| a |
| 1 |
| b |
| 2a+3ab-2b |
| a-2ab-b |
| 2(a-b)+3ab |
| (a-b)-2ab |
| -10ab+3ab |
| -5ab-2ab |
| -7ab |
| -7ab |
| x2-1 |
| x-1 |
| 1 |
| x+1 |
| a+b |
| 5ab |
| 15a2b |
| a2-b2 |
| 5x+3y |
| x2-y2 |
| 2x |
| x2-y2 |
| 2 |
| a2-4 |
| a2+4 |
| 4a |
| 1 |
| 2 |
| 1 |
| a |
| 1 |
| 2 |
| x2-2x+1 |
| x2-1 |
| x-1 |
| x2+x |
| 3 |
| x-4 |
| 24 |
| x2-16 |
| 1 |
| a |
| 1 |
| b |
| a-ab-b |
| 2a+ab-2b |
© 2017-2019 超级试练试题库,All Rights Reserved.