题目内容
已知
=
,则
=______.
| x |
| 3 |
| y |
| 2 |
| x-y |
| x+y |
设
=
=t.
∴x=3t,y=2t,
∴
=
=
;
故答案是:
.
| x |
| 3 |
| y |
| 2 |
∴x=3t,y=2t,
∴
| x-y |
| x+y |
| 3t-2t |
| 3t+2t |
| 1 |
| 5 |
故答案是:
| 1 |
| 5 |
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题目内容
| x |
| 3 |
| y |
| 2 |
| x-y |
| x+y |
| x |
| 3 |
| y |
| 2 |
| x-y |
| x+y |
| 3t-2t |
| 3t+2t |
| 1 |
| 5 |
| 1 |
| 5 |