(lg2)^2+lg20*lg5+(lg5)^2
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(lg2)^2+lg20*lg5+(lg5)^2(lg2)^2+lg20*lg5+(lg5)^2(lg2)^2+lg20*lg5+(lg5)^2原式＝(lg2)^2+lg(5*2^2)*lg5+(lg
(lg2)^2+lg20*lg5+(lg5)^2
(lg2)^2+lg20*lg5+(lg5)^2
(lg2)^2+lg20*lg5+(lg5)^2
原式＝(lg2)^2+lg(5*2^2)*lg5+(lg5)^2
=(lg2)^2+(lg5+2lg2)*lg5+(lg5)^2
=(lg2)^2+2lg2*lg5+(lg5)^2+(lg5)^2
=(lg2+lg5)^2+(lg5)^2
=1+(lg5)^2
(lg2)^2+lg5*lg20
(lg2)^2+lg20*lg5
lg25+2lg2+lg5*lg20+lg^22=?
lg^2 5+lg2*lg5+lg20=计算
lg2*lg50+lg5*lg20-2lg5*lg2
lg5·lg20+(lg2)^2
lg5^2+lg4+lg5*lg20+(lg2)^2
(lg2)^2+lg20*lg5+(lg5)^2
lg5^2+lg4+lg5*lg20+(lg2)^@
问道对数题 lg2*lg50+lg20*lg5-2lg5*lg2
1.lg²5+lg2×lg5+lg2 2.（lg2）³ +（lg 5）³ +3lg 2×lg 5 3.7 的lg20次方×4.lg500+lg8/5-1/2lg64+50(lg2+lg5)²1.lg²5+lg2×lg5+lg2 2.（lg2）³ +（lg 5）³ +3lg 2×lg 53.7 的lg20次方×(1/2)的lg0.7次方
对数lg2*lg5=?2lg（5）+2/3 lg8+lg5*lg20+lg2 =lg5^2+lg8^(2/3)+lg5*(lg4+lg5)+lg2 =lg100+lg5+2lg2*lg5+lg2 =2+(lg5+lg2) =2+1 =3 第二个等号lg5*(lg4+lg5)为什么=lg5+2lg2*lg5
lg25+2／3lg8+lg5×lg20+^2＝多少?lg2×lg3／lg^2＝多少?
lg5*lg20+ (lg2)^如题过程帮忙写详细点lg²2是什么意思额....
lg平方5+lg2*lg5+lg20怎么算?还有 7lg20*(1/2)上面的lg0.7
lg2·lg50-lg5·lg20-lg4=?lg(5^2)+(2/3)lg8+lg5·lg20+(lg^2)2=?
（lg2)^2+lg5·lg20-1=?
(lg2)^2 lg5×lg20－1