(lg5)?+lg2*lg50+2的(1+1/2log25)次方

题目详情

(lg5)?+lg2*lg50+2的(1+1/2log2 5)次方

▼优质解答

答案和解析

原式=2^[1+log2(√5)]+(lg5)��+lg2(lg5+lg10)
=2^1*2^log2(√5)]+(lg5)��+lg2lg5+lg2
=2(√5)+lg5(lg5+lg2)+lg2
=2√5+lg5+lg2
=2√5+1

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