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求值:(lg2)^3+3(lg2)^2*lg5+3lg2*(lg5)^2+(lg5)^3

来源：学生作业帮 编辑：拍题作业网作业帮 分类：综合作业 时间：2024/04/19 14:58:40
求值:(lg2)^3+3(lg2)^2*lg5+3lg2*(lg5)^2+(lg5)^3
和立方公式
(lg2)^3+3(lg2)^2*lg5+3lg2*(lg5)^2+(lg5)^3
=[lg2+lg5]^3
=(lg10)^3
=1
3+lg5+(lg2)^2 求值:(lg2)^3+3(lg2)^2*lg5+3lg2*(lg5)^2+(lg5)^3 lg2(lg5-lg2)-lg5(lg5+3lg2)等于 (lg2)^3+(lg5)^3+3*lg2*lg5 2lg5+(lg2)^3*(2lg5+lg2)计算~ (lg²2-lg2*lg5+lg²)+3lg2*lg5 (lg2)³+(lg5)³+3lg2×lg5 (lg2)^3+(lg5)^2= lg2^2+lg2*lg5+lg5=lg2(lg2+lg5)+lg5 (lg2)^3+3lg2lg5+(lg5)^3 求值 (lg2)^3+(lg5)^3+lg5*lg8 2lg2+3lg5-lg1除以5