Question

若x的平方)a等于2,y的立方a等于3,则(xy)6a等于?

Answer 1

(x^2)^a=x^(2a)=2,(y^3)^a=y^(3a)=3

(xy)^(6a)=x^(6a)*y^(6a)=[x^(2a)]^3*[y^(3a)]^2=2^3*3^2=72