x^n=2, y^n = 3//(x^2.y)^(2n)=x^(4n). y^(2n)=(2)^4 . (3)^2=(16)(9)=144
(x²y)的2n次方=(x²)²ⁿ(y)²ⁿ=((xⁿ)²)²(yⁿ)²=((2²)²)×3²=4²×9=16×9=144