如果2的(2m+n)次方*2的5次方,3的(4m-2n)*3的3次方=3的9次方,
2^(2m+n+5)*3^(4m-2n+3)=3^9
(2m+n+5)=0 4m-2n+3=9
解得
m=-1/2
n=-4
m的n次方乘以n的n次方
=(mn)^n
=((-1/2)*(-4))^(-4)
=2^(-4)
=1/16