题目内容
若m+
=3,则m2+
的值为______.
| 1 |
| m |
| 1 |
| m2 |
∵m+
=3,
∴(m+
)2=9,
∴m2+2m?
+
=9,
则m2+
=7,
故答案为:7.
| 1 |
| m |
∴(m+
| 1 |
| m |
∴m2+2m?
| 1 |
| m |
| 1 |
| m2 |
则m2+
| 1 |
| m2 |
故答案为:7.
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