题目内容
化简(
-
)÷
的结果是______.
| a2-4 |
| a2-4a+4 |
| 1 |
| 2-a |
| a2 |
| a2-2a |
原式=[
+
]•
=
•
=
.
故答案为:
.
| (a+2)(a-2) |
| (a-2)2 |
| 1 |
| a-2 |
| a(a-2) |
| a2 |
=
| a+3 |
| a-2 |
| a(a-2) |
| a2 |
=
| a+3 |
| a |
故答案为:
| a+3 |
| a |
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