(Log2)的三次方+(Log5)的三次方+3lg2lg5=?

来源：学生作业帮编辑：大师作文网作业帮分类：综合作业时间：2024/11/10 07:12:06

(Log2)的三次方+(Log5)的三次方+3*lg2*lg5=?

(log2)^3+(log5)^3+3lg2lg5
=(log2+log5)((log2)^2-log2log5+(log5)^2)+3log2log5
=log(2*5)((log2)^2+2log2log5+(log5)^2-3log2log5)+3log2log5
=log10((log2+log5)^2-3log2log5)+3log2log5
=1*((log10)^2-3log2log5)+3log2log5
=(1-3log2log5)+3log2log5
=1

(Log2)的三次方+(Log5)的三次方+3*lg2*lg5=? (Log2)的三次方+(Log5)的三次方+lg8*lg5 （lg2）三次方加3lg3乘lg5加（lg5）三次方… 1的三次方+2的三次方+3的三次方+4的三次方+.+23的三次方+24的三次方=?要简算! （lg5）的二次方+lg2乘以lg5+lg2 已知1的三次方+2三次方+3三次方+.+15三次方=14400,求2三次方+4三次方+6三次方+.+30三次方的值 a+b=(lg2)的3此方+(lg5)3次方+3lg2.lg5化简得什么? 求下列各式的值 1）log2 6+log2 3 2)lg5+lg2 3)log5 3+log5 三分之一 4）log3 ：(lg5)的2方+lg2乘lg50 观察下列等式：1的三次方=一的二次方；1的三次方+2的三次方=3的二次方；1的三次方+二的三次方+3的三次方= 求一道数学题：已知a+b等于lg（三次方）2+lg（三次方）5+3lg2乘以lg5 求3ab+a（三次方）+b（三次方） (1/log2 10) + (1/log5 10) =lg2 + lg5