题目内容
计算:
(1)8
+(-
)0-(
)-2+
)2
(2)2log525+3log216-8log71.
(1)8
| 2 |
| 3 |
| 3 |
| 5 |
| 1 |
| 3 |
| (3-π |
(2)2log525+3log216-8log71.
(1)8
+(-
)0-(
)-2+
=22+1-32+π-3=π-7;
(2)2log525+3log216-8log71=2×2+3×4-0=16.
| 2 |
| 3 |
| 3 |
| 5 |
| 1 |
| 3 |
| (3-π)2 |
(2)2log525+3log216-8log71=2×2+3×4-0=16.
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