题目内容
化简
-
.
| 1 |
| 2m-4 |
| 2 |
| m2-4 |
原式=
-
=
=
=
.
| 1 |
| 2(m-2) |
| 2 |
| (m+2)(m-2) |
=
| m+2-4 |
| 2(m+2)(m-2) |
=
| m-2 |
| 2(m+2)(m-2) |
=
| 1 |
| 2(m+2) |
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题目内容
| 1 |
| 2m-4 |
| 2 |
| m2-4 |
| 1 |
| 2(m-2) |
| 2 |
| (m+2)(m-2) |
| m+2-4 |
| 2(m+2)(m-2) |
| m-2 |
| 2(m+2)(m-2) |
| 1 |
| 2(m+2) |