3 的m次方=6,9的n次方=2,求3的2m-4n+1次方的值_数学解答

3 的m次方=6,9的n次方=2,求3的2m-4n+1次方的值

人气：184 ℃　时间：2019-08-20 14:10:13

解答

3^(2m-4n+1)
=3^2m÷3^4n*3
=(3^m)^2÷(3^2n)^2*3
=(3^m)^2÷(9^n)^2*3
=6^2÷2^2*3
=36÷4*3
=9*3
=27