题目内容
化简:
-
的结果是( )
| 2x |
| x2-4 |
| 1 |
| x-2 |
A.
| B.
| C.
| D.
|
| 2x |
| x2-4 |
| 1 |
| x-2 |
=
| 2x-x-2 |
| (x+2)(x-2) |
=
| 1 |
| x+2 |
故选A.
练习册系列答案
相关题目
题目内容
| 2x |
| x2-4 |
| 1 |
| x-2 |
A.
| B.
| C.
| D.
|
| 2x |
| x2-4 |
| 1 |
| x-2 |
| 2x-x-2 |
| (x+2)(x-2) |
| 1 |
| x+2 |