lg5²+2/3lg8+lg5×lg20+(lg2)²
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lg5²+2/3lg8+lg5×lg20+(lg2)²
lg5²+2/3lg8+lg5×lg20+(lg2)²
lg5²+2/3lg8+lg5×lg20+(lg2)²
原式=2lg5+2/3*lg2³+lg5*(lg2²+lg5)+lg²2
=2lg5+2lg2+2lg5*lg2+lg²5+lg²2
=2(lg2+lg5)+(lg2+lg5)²
=2*1+1²
=3
lg5²+2/3lg8+lg5*lg20+(lg2)²
lg5²+2/3lg8+lg5×lg20+(lg2)²
lg5*lg5+2/3lg8+lg5*lg20求值,
高一对数运算一道lg5²+2/3lg8+lg5*lg20+lg²2=
lg25+2/3lg8+lg5*lg20+lg²2
lg25+(2/3)lg8+lg5*lg20+lg2²
lg8+3lg5=?
lg5^2+2/3lg8+lg5*lg20+lg2^2
lg5^2+2/3lg8+lg5*lg20+lg^2
lg5^2+lg8^2/3+lg5*lg20+(lg2)^2=?
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lg5^2+2/3lg8+lg5*lg20+(lg2)^2 lg5*lg20怎么办啊
lg2+lg5=?1-lg2=?1-lg5=?2lg5+2/3lg8+lg5*lg20+(lg2)2=?
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