化简[(1-lg5)^2+lg2乘lg5]/lg8

来源：学生作业帮编辑：神马作文网作业帮分类：数学作业时间：2024/11/08 04:49:41

[(1-lg5)^2+lg2乘lg5]/lg8
=[(lg10-lg5)²+lg2*lg5]/lg2³
=(lg²2+lg2*lg5)/(3lg2)
=lg2(lg2+lg5)/(3lg2)
=lg2/(3lg2)
=1/3

lg500＋lg500+lg8/5-1/2lg64+（lg2+lg5）（lg2+lg5）化简 lg2(1+lg5)+(lg5)^2 计算：（lg2)2+3lg5+lg5(1+lg2)+lg8+log2（5）log5（4) 化简 lg5(lg8+lg1000)+(lg2^√3)^2 (lg8+lg100)lg5+3(lg2)^2+lg6^-1+lg0.006 lg500+lg8/5–1/2lg64+50(lg2+lg5) (lg8+lg1000)lg5+3(lg2)^2+lg^-1+lg0.006 lg5(1-lg5)+2lg5根号2+lg2(1-lg5) (lg2)^3+(lg5)^3+lg5*lg8 计算lg8+lg125-lg2-lg5 lg2^2+lg2*lg5+lg5=lg2(lg2+lg5)+lg5 lg5（2）+2/3lg8+lg5*lg2+（lg2）^2