问题
解答题
lg5•log
|
答案
lg5•log
20+(lg210
)2-3log32-1．2
=lg5•（2lg20）+(lg2
)2-2 3log32 3
=2（1-lg2）•（1+lg2）+2lg22-2 3
=2-
=2 3 4 3
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lg5•log
|
lg5•log
20+(lg210
)2-3log32-1．2
=lg5•（2lg20）+(lg2
)2-2 3log32 3
=2（1-lg2）•（1+lg2）+2lg22-2 3
=2-
=2 3 4 3