题目内容
32x=2,3y=5,则求34x-2y=______.
原式=
=
,
当32x=2,3y=5时,原式=
=
.
故答案为:
.
| 34x |
| 32y |
=
| (32x)2 |
| (3y)2 |
当32x=2,3y=5时,原式=
| 22 |
| 52 |
| 4 |
| 25 |
故答案为:
| 4 |
| 25 |
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题目内容
| 34x |
| 32y |
| (32x)2 |
| (3y)2 |
| 22 |
| 52 |
| 4 |
| 25 |
| 4 |
| 25 |