题目内容
化简:(
-
)÷
.
| x2-4 |
| x2-4x+4 |
| 1 |
| x-2 |
| x+1 |
| x2-2x |
原式=[
-
]÷
=
•
=
•
=x.
| (x+2)(x-2) |
| (x-2)2 |
| 1 |
| x-2 |
| x+1 |
| x(x-2) |
| x+2-1 |
| x-2 |
| x(x-2) |
| x+1 |
| x+1 |
| x-2 |
| x(x-2) |
| x+1 |
练习册系列答案
相关题目