lg2lg50+lg25-lg5lg20需要过程,谢谢~

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lg2*lg50+lg25-lg5*lg20需要过程,谢谢~lg2*lg50+lg25-lg5*lg20需要过程,谢谢~lg2*lg50+lg25-lg5*lg20需要过程,谢谢~lg2*lg50+l

lg2*lg50+lg25-lg5*lg20需要过程,谢谢~
lg2*lg50+lg25-lg5*lg20
需要过程,谢谢~

lg2*lg50+lg25-lg5*lg20需要过程,谢谢~
lg2*lg50+lg25-lg5*lg20
=lg2(lg5+lg10)+lg25-lg5(lg2+lg10)
=lg2(lg5+1)+lg25-lg5(lg2+1)
=lg2lg5+lg2+lg25-lg2lg5-lg5
=lg2+lg25-lg5
=lg(2×25÷5)
=lg10
=1

计算 lg5×lg20-lg2×lg50-lg25 lg5 X lg20 - lg2 X lg50 - lg25 化简 lg2×lg50+lg25-lg5×lg20 lg25+lg2*lg50+lg^2 2=? lg25+lg2*lg50+lg平方2 lg50+lg2*lg5+lg²2=? lg2+lg2.lg50+lg25 lg2*lg50+lg25-lg5*lg20需要过程,谢谢~ 高一对数计算lg21*lg50+lg25-lg51*lg20=lg2*lg50+lg25-lg5*lg20= lg25+lg2*lg50+lg4 (lg^2)^2+lg^2*lg^50+lg^25=?(lg2)^2+lg2*lg50+lg25=? (lg2)^2+lg2×lg50+lg25 lg²2+lg50+lg2*lg5怎么解答（步奏 lg^2 2+2lg5+lg2·lg50 （lg5)^2+lg2*lg50 （lg5)²+lg2×lg50 (lg)的平方+lg2*lg50= (lg5)的平方+lg2*lg50 （lg）^2+lg2*lg25+(lg5)^2等于多少?