4lg2+3lg5-lg1/5

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/15 05:08:35
4lg2+3lg5-lg1/54lg2+3lg5-lg1/54lg2+3lg5-lg1/54lg2+3lg5-lg1/5=lg2^4+lg5^3-lg5^(-1)=lg(2^4x5^3)/[5^(-1

4lg2+3lg5-lg1/5
4lg2+3lg5-lg1/5

4lg2+3lg5-lg1/5
4lg2+3lg5-lg1/5
=lg2^4+lg5^3-lg5^(-1)
=lg(2^4x5^3)/[5^(-1)]
=lg(2^4x5^4)
=lg(2x5)^4
=4lg10
=4