(lg5)²+lg5·lg20+1g4=?
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(lg5)²+lg5·lg20+1g4=?(lg5)²+lg5·lg20+1g4=?(lg5)²+lg5·lg20+1g4=?lg5(lg5+lg20)+1g4=lg5*
(lg5)²+lg5·lg20+1g4=?
(lg5)²+lg5·lg20+1g4=?
(lg5)²+lg5·lg20+1g4=?
lg5(lg5+lg20)+1g4=lg5*lg100+lg4=2lg5+2lg2=2
原式=lg5（lg5+lg20）+21g2
=lg5*lg100+2lg2
=2lg5+2lg2
=2lg10
=2
(lg5)²+lg5·lg20+1g4=?
lg20+lg5
lg5²+2/3lg8+lg5*lg20+(lg2)²
lg5²+2/3lg8+lg5×lg20+(lg2)²
lg5·lg20+(lg2)^2
化简（lg2）²+lg5*lg20
lg4+lg5.lg20+(lg5)2
lg4+lg5.lg20+(lg5)2
2lg5+lg20=?lg5*lg20=?
lg2·lg50-lg5·lg20-lg4
（lg2)^2+lg5·lg20-1=?
数学lg5·lg20等于多少?
lg5*lg20+(lg2)^
(lg2)^2+lg5*lg20
(lg2)^2+lg20*lg5
lg5*lg20怎么计算?
lg5×lg20＝?
高一对数运算一道lg5²+2/3lg8+lg5*lg20+lg²2=