2lg5+2/3lg8等于
来源：学生作业帮助网 编辑：六六作业网 时间：2024/05/02 07:40:18
2lg5+2/3lg8等于2lg5+2/3lg8等于2lg5+2/3lg8等于2lg5+2/3lg8=2lg5+2/3×3lg2=2lg5+2lg2=2lg10=22lg5+(2/3)lg8=2lg5
2lg5+2/3lg8等于
2lg5+2/3lg8等于
2lg5+2/3lg8等于
2lg5+2/3lg8
=2lg5+2/3×3lg2
=2lg5+2lg2
=2lg10
=2
2lg5+(2/3)lg8
=2lg5+2lg2
=2lg10
=2
2lg5=lg25,2/3lg8=lg4,lg25+lg4=lg100=2