lg5(1-lg5)+2lg5根号2+lg2(1-lg5)
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lg5(1-lg5)+2lg5根号2+lg2(1-lg5)lg5(1-lg5)+2lg5根号2+lg2(1-lg5)lg5(1-lg5)+2lg5根号2+lg2(1-lg5)原式=lg5(lg10--
lg5(1-lg5)+2lg5根号2+lg2(1-lg5)
lg5(1-lg5)+2lg5根号2+lg2(1-lg5)
lg5(1-lg5)+2lg5根号2+lg2(1-lg5)
原式=lg5(lg10--lg5)+lg(5根号2)^2+lg2(lg10--lg5)
=lg5lg2+lg50+lg2lg2
=lg5lg2+1+lg5+(lg2)^2
=lg2(lg5+lg2)+1+lg5
=lg2+1+lg5
=lg10+1
=1+1=2.
lg5(1-lg5)+2lg√5+lg2(1-lg5)
= lg5*lg2+lg5+lg2*lg2
=(lg5+lg2)*lg2+lg5
=lg2+lg5
=1
lg5(1-lg5)+2lg5根号2+lg2(1-lg5)
lg2(1+lg5)+(lg5)^2
对数运算:(lg5)的平方+lg2*lg50根号下(lg5的平方-2lg5+1)
计算:(lg5)^2 +lg2 *lg5
lg4+lg5.lg20+(lg5)2
lg4+lg5.lg20+(lg5)2
(lg5)^2+lg5.lg2=
lg5*lg5+2/3lg8+lg5*lg20求值,
化简[(1-lg5)^2+lg2乘lg5]/lg8
(lg^2)2+lg2*lg5+lg5
lg5^2+lg4+lg5*lg20+(lg2)^2
计算(lg5)^2+lg4*lg5+(lg2)^2
2lg2(lg2+lg5)+2lg5得数
(lg2)^2+lg2*lg5+(lg5)^2=
(lg2)^2+lg20*lg5+(lg5)^2
(lg5)^2+lg4*lg5+(lg2)^2
(lg2)^2+lg4*lg5+(lg5)^2
lg5^2=2lg5吗?