3lg2+3lg5=?
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3lg2+3lg5=?
3lg2+3lg5=?
3lg2+3lg5=?
3lg2+3lg5=3(lg2+lg5)=3lg(2*5)=3lg10=3
3lg2-lg5=
(lg2)³+(lg5)³+3lg2×lg5=?
(lg2)³+(lg5)³+3lg2*lg5=
3lg2+3lg5=?
(lg2)^3+(lg5)^2=
lg2(lg5-lg2)-lg5(lg5+3lg2)等于
(lg2)^3+(lg5)^3+3*lg2*lg5
(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,
(lg2)³+(lg5)³+3lg2×lg5
(lg2)x(lg2)x(lg2)+(lg5)^3+3xlg2xlg5=?
lg2+lg5=?1-lg2=?1-lg5=?2lg5+2/3lg8+lg5*lg20+(lg2)2=?
3+lg5+(lg2)^2
lg2-lg5/lg4-lg5=2lg2-1/3lg2-1 为什么?
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+lg8^2/3+lg5*lg20+(lg2)^2=?
(lg2)^3+(lg5)^3+3lg2lg5怎么算=(lg5+lg2)[(lg5)²-lg5lg2+(lg2)²]+3lg5lg2为什么
(lg2)^3+2lg2.lg5+(lg5)^3=题目写错了 = = 应该是 :(lg2)^3+3lg2.lg5+(lg5)^3
lg5*lg8000+(lg2^√ 3)^2=?