lg5×lg20=?
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lg5×lg20=?
lg20+lg5
2lg5+lg20=?lg5*lg20=?
lg4+lg5.lg20+(lg5)2
lg4+lg5.lg20+(lg5)2
lg5*lg20+(lg2)^
(lg2)^2+lg5*lg20
(lg2)^2+lg20*lg5
lg5*lg20怎么计算?
为什么lg5*lg20=lg5*(1+lg2)
lg5^2+lg4+lg5*lg20+(lg2)^@
lg5^2+lg4+lg5*lg20+(lg2)^2
lg2*lg50+lg5*lg20-2lg5*lg2
lg2lg50+lg5×lg20-lg100×lg5×lg2=
(lg2)^2+lg20*lg5+(lg5)^2
lg2*lg2+lg20*lg5=?
lg5·lg20+(lg2)^2
lg5乘lg20怎么算