lg5*lg2^2怎么化成2lg5*lg2的?

lg5*lg2^2怎么化成2lg5*lg2的? lg^2 5+lg5*lg2+lg2 怎么算lg^2 5+lg5*lg2+lg2 怎么算 (lg^2)2+lg2*lg5+lg5 lg²2+lg2×lg5+lg5 (lg²2-lg2*lg5+lg²)+3lg2*lg5 lg^2 5+lg2*lg5+lg2=? (lg2)^平方+（lg5)^平方+2lg*2lg5=?那个2lg*2lg5怎么写详细点啊谢谢! lg²2+ lg2*lg5+ lg5的值 lg²2+lg2·lg5+lg5=____________ 求值lg的平方2+lg2乘lg5+lg5 lg2(1+lg5)+(lg5)^2 计算：(lg5)^2 +lg2 *lg5 (lg5)^2+lg5.lg2= (lg5)^2+2lg-(lg2)^2 怎么算 lg²2+lg50+lg2*lg5怎么解答（步奏 求值 ：lg5²+lg2*lg50+(lg2)²答案写；2lg5+lg2*lg(5*10)+(lg2)²①=2lg5+lg2*lg5+lg2+(lg2)² ②=2lg5+lg2*(lg5+lg2)+lg2③ .第 ②步怎么得到的怎么就变成了lg2*lg5+lg2? lg5×lg(5×2)+lg2怎莫算具体 lg50+lg2*lg5+lg²2=?