2lg5+3分之2lg8+lg5乘lg20+(lg2)^2
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2lg5+3分之2lg8+lg5乘lg20+(lg2)^22lg5+3分之2lg8+lg5乘lg20+(lg2)^22lg5+3分之2lg8+lg5乘lg20+(lg2)^2lg5^2+2/3lg8+
2lg5+3分之2lg8+lg5乘lg20+(lg2)^2
2lg5+3分之2lg8+lg5乘lg20+(lg2)^2
2lg5+3分之2lg8+lg5乘lg20+(lg2)^2
lg5^2+2/3lg8+lg5*lg20+(lg2)^2
=2lg5+2/3lg2^3+lg5*lg(4*5)+(lg2)^2
=2lg5+2lg2+(lg5)^2+lj5*2lg2+)lg2)^2
=2(lg2+lg5)+(lg2+lg5)^2
=2lg10+lg10^2
=2+1
=3
2lg5 +(2lg8)/3 +lg5*lg20 +(lg2)^2
=lg5[2+lg(2*10)]+2lg2+(lg2)^2
=lg5(3+lg2)+lg2(2+lg2)
=lg5 +(2+lg2)(lg5+lg2)
=lg5+lg2+2
=3
(lg5)平方+2/3lg8+lg5乘lg20+(lg2)平方
2lg5+3分之2lg8+lg5乘lg20+(lg2)^2
化简[(1-lg5)^2+lg2乘lg5]/lg8
lg5^2+2/3lg8+lg5*lg20+lg2^2
lg5^2+lg8^2/3+lg5*lg20+(lg2)^2=?
3lg2+2lg5+lg5乘以lg8怎样算
lg5²+2/3lg8+lg5*lg20+(lg2)²
lg5²+2/3lg8+lg5×lg20+(lg2)²
lg2+lg5=?1-lg2=?1-lg5=?2lg5+2/3lg8+lg5*lg20+(lg2)2=?
lg5^2+2/3lg8+lg5*lg20+(lg2)^2 lg5*lg20怎么办啊
(lg2)^3+(lg5)^3+lg5*lg8=(lg2+lg5)[(lg2)^2-lg2*lg5+(lg5)^2]+lg5*lg2^3=1[(lg2)^2-lg2*lg5+(lg5)^2]+3lg5*lg2=(lg2)^2+(lg5)^2+2lg5*lg2=(lg2+lg5)^2=1网上看了看答案,可是第一步没有看懂.求得出第一步的过程,
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
lg5(2)+2/3lg8+lg5*lg2+(lg2)^2
计算:(lg2)2+3lg5+lg5(1+lg2)+lg8+log2(5)log5(4)
计算 lg25 + 2/3 lg8+lg5乘 lg20+(lg2)^2+lg100___.
lg25+2/3lg8+lg5*lg20+(lg2)^2
(lg2)^2+lg25+2/3lg8+lg5*lg20=?
lg25+2/3lg8+lg5*lg20+(lg2)^2=?