题目内容
已知:
=
,则
=______.
| a |
| b |
| 2 |
| 3 |
| a-b |
| a+b |
∵
=
,
∴设a=2k,b=3k,
∴
=
=-
,
故答案为:-
.
| a |
| b |
| 2 |
| 3 |
∴设a=2k,b=3k,
∴
| a-b |
| a+b |
| 2k-3k |
| 2k+3k |
| 1 |
| 5 |
故答案为:-
| 1 |
| 5 |
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题目内容
| a |
| b |
| 2 |
| 3 |
| a-b |
| a+b |
| a |
| b |
| 2 |
| 3 |
| a-b |
| a+b |
| 2k-3k |
| 2k+3k |
| 1 |
| 5 |
| 1 |
| 5 |