题目内容
计算
+
=______．
| m2-3m |
| m2-9 |
| 3 |
| m+3 |
原式=
+
=
+
=
=1，
故答案为1．
| m(m-3) |
| (m+3)(m-3) |
| 3 |
| m+3 |
=
| m |
| m+3 |
| 3 |
| m+3 |
=
| m+3 |
| m+3 |
=1，
故答案为1．
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题目内容
| m2-3m |
| m2-9 |
| 3 |
| m+3 |
| m(m-3) |
| (m+3)(m-3) |
| 3 |
| m+3 |
| m |
| m+3 |
| 3 |
| m+3 |
| m+3 |
| m+3 |