问题 解答题
(1)计算:2
3
×
315
×
612

(2)计算:2log510+log50.25.
答案

解(1)计算:2

3
×
315
×
612

=2

633
×
6(
3
2
)2
×
612

=2

633×(
3
2
)2×12

=2

636
=6;

(2)2log510+log50.25

=log5102+log50.25

=log5100×0.25

=log525

=2log55=2.

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