是2^lg(2)*5^lg(5)*2^lg(5)*5^lg(2) =[2^lg(2)*2^lg(5)]*[5^lg(5)*5^lg(2)]=2^(lg2+lg5)+5^(lg2+lg5)=2+5=7
如何计算2^log(2)*5^log(5)*2^log(5)*5^log(2) 的结果?
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