| a-1 |
| a |
| a |
| a+2 |
| 1 |
| a2+2a |
| 2 |
| a-1 |
| a |
| a2-1 |
| a(a+2) |
| a-1 |
| a |
| a(a+2) |
| (a+1)(a-1) |
| a+2 |
| a+1 |
| a+1-(a+2) |
| a+1 |
| a+1-a-2 |
| a+1 |
| 1 |
| a+1 |
| 1 | ||
|
| 1 | ||
|
| ||
| 2 |
| x |
| x2-1 |
| x+x2 |
| x2 |
| a+2 |
| a-2 |
| 4 |
| a2-4a+4 |
| a |
| a-2 |
| x-1 |
| x+2 |
| x2-4 |
| x2-2x+1 |
| 1 |
| x2-1 |
| 3 |
| a-2 |
| a+1 |
| a2-4 |
| 1 |
| a |
| a |
| 2-a |
| 1 |
| a-2 |
| a |
| b |
| 4 |
| 3 |
| a |
| a+b |
| b |
| a-b |
| b2 |
| a2-b2 |
© 2017-2019 超级试练试题库,All Rights Reserved.