题目内容
若a-
=3,则a2+
=______;若m+
=3,则m2+
=______.
| 1 |
| a |
| 1 |
| a2 |
| 1 |
| m |
| 1 |
| m2 |
a2+
=(a-
)2+4=32-4=5;
m2+
=(m+
)2-2=32-2=7.
故答案为5,7.
| 1 |
| a2 |
| 1 |
| a |
m2+
| 1 |
| m2 |
| 1 |
| m |
故答案为5,7.
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| 1 |
| a |
| 1 |
| a2 |
| A、4 | B、6 | C、2 | D、8 |