题目内容
化简：
-
=______．
| 2m |
| m2-4 |
| 1 |
| m+2 |
原式=
-
=
-
=
=
．
故答案为：
．
| 2m |
| (m+2)(m-2) |
| 1 |
| m+2 |
=
| 2m |
| (m+2)(m-2) |
| m-2 |
| (m+2)(m-2) |
=
| 2m-m+2 |
| (m+2)(m-2) |
=
| 1 |
| m-2 |
故答案为：
| 1 |
| m-2 |
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