化简lg²5+(2+lg5)lg2+1/2lg25=?
(lg)^2+lg2*lg25+(lg5)^2等于多少?
lg^2 5+lg2*lg5+lg2=?
lg2×lg5=?lg2×lg5=lg?求问号..是lg(2+5)吗?
lg²2+lg2×lg5+lg²5=?
lg5/lg2*lg0.5/lg25为什么得1/2?
lg25+lg5*lg4+lg2^2
(lg²2-lg2*lg5+lg²)+3lg2*lg5
lg50+lg2*lg5+lg²2=?
求值:(lg2)2=(lg5)2=lg2*lg25=
(lg2)的平方+lg2∙lg5+2分之1lg25
lg²2+lg2·lg5+lg5=____________
lg^2(5)+lg2+lg2乘lg5等于多少?