问题标题:
【初中数学】求(log5)^2+(log2)(log50)的值.
问题描述:

【初中数学】求(log5)^2+(log2)(log50)的值.

唐从宽回答:
  (log5)^2+(log50)(log2)   (log5)^2+(log(5*10))(log2)   =(log5)^2+(log5+log10)(log2)   =(log5)^2+(log5+1)(log2)   =(log5)^2+(log5)(log2)+log2   =(log5)(log5+log2)+(log2)   =(log5)(log10)+(log2)   =(log5)(1)+(log2)   =(log5)+(log2)   =(log10)   =1
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