[log2]2+log2乘log50+log25

分类: 作业答案 • 2022-01-29 21:29:26

问题描述：

答

[log2]2+log2*log50+log25
=log2(log2+log50)+log25
=log2(log(2*50))+log25
=2log2+log25
=log2^2+log25
=log(4+25)
=2
背公式loga+logb=logab,nloga=loga^n
可扩展