3的m次方=6,3的n次方=2,求3的2m-3n次方,过程

分类: 作业答案 • 2022-05-02 14:39:00

问题描述：

答

即
3^m=6
3^n=2
3^(2m-3n)
=3^2m÷3^3n
=(3^m)^2÷(3^n)^3
=6^2÷2^3
=36/8
=9/2