(lg5)2+lg2×lg50=_.
问题描述:
(lg5)2+lg2×lg50=______.
答
(lg5)2+lg2×lg50
=(lg5)2+lg2×(lg10+lg5)
=(lg5)2+lg2+(lg5)(lg2)
=lg5(lg5+lg2)+lg2=1.
故答案为:1.