(lg50)^2+lg2*lg50^2+(lg2)^2
问题描述:
(lg50)^2+lg2*lg50^2+(lg2)^2
答
(lg50)^2+lg2*lg50^2+(lg2)^2
=(lg50)^2+2lg2*lg50+(lg2)^2
=(lg50+lg2)^2
=(lg100)^2
=2^2
=4