(lg8+lg100)lg5+3(lg2)^2+lg6^-1+lg0.006
问题描述:
(lg8+lg100)lg5+3(lg2)^2+lg6^-1+lg0.006
答
=3lg2lg5+2lg5+3(lg2)^2-lg6+lg6-3
=3lg2(lg2+lg5)+2lg5-3
=3lg2+3lg5-lg5-3
=-lg5