lg2×lg2500+2(lg5)^2 怎么算
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lg2×lg2500+2(lg5)^2 怎么算
lg2×lg2500+2(lg5)^2 怎么算
lg2×lg2500+2(lg5)^2 怎么算
lg2×lg2500+2(lg5)^2
=lg2×2lg50+2(lg5)^2
=2lg2×(lg2+lg25)+2(lg5)^2
=2(lg2)^2+2lg2lg25+2(lg5)^2
=2(lg2)^2+4lg2lg5+2(lg5)^2
=2[lg2+lg5]^2
=2(lg10)^2
=2*1^2
=2
lg2×lg2500+2(lg5)^2 怎么算
lg2*lg2500+2(lg5)平方 计算
计算lg2×lg2500+2(lg5)的平方
对数指数运算问题(1/27)^2+lg2*lg2500+2(lg5)^2+9^(2+log93)=
lg2(1+lg5)+(lg5)^2
计算:(lg5)^2 +lg2 *lg5
(lg5)^2+lg5.lg2=
2lg2(lg2+lg5)+2lg5得数
(lg2)^2+lg2*lg5+(lg5)^2=
lg2*lg50+lg5*lg20-2lg5*lg2
(lg5)平方+2*lg5*lg2+(lg2)平方
(lg2)^2+lg5*lg20
(lg2)^2+lg20*lg5
(lg5)^2+lg2*lg50
3+lg5+(lg2)^2
2lg5*lg2=
=(lg5)^2+lg2×lg5+lg2 =lg5×(lg5+lg2)+lg2麻烦问一下,这是咋做的
lg5(1-lg5)+2lg5根号2+lg2(1-lg5)