题目内容
计算
(1)log2[log3(log5125)]
(2)(2a
b
)(-6a
b
)÷(-3a
b
)
(1)log2[log3(log5125)]
(2)(2a
2 |
3 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
6 |
5 |
6 |
(1)对于式子log2[log3(log5125)],需要一步一步求解,
因为:log5125=3,故原式=log2(log33)=log21=0.
故答案为0.
(2)对式子(2a
b
)(-6a
b
)÷(-3a
b
)=2×(-6)÷(-3)(a
a
÷a
)(b
b
÷b
)=4a
故答案为4a.
因为:log5125=3,故原式=log2(log33)=log21=0.
故答案为0.
(2)对式子(2a
2 |
3 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
6 |
5 |
6 |
2 |
3 |
1 |
2 |
1 |
6 |
1 |
2 |
1 |
3 |
5 |
6 |
故答案为4a.
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