a^m=3,a^n=5a^(3m-2n)=a^3m÷a^2n=(a^m)^3÷(a^n)^2=3^3÷5^2=27/25a^(2m+3n)=a^2mXa^3n=(a^m)^2X(a^n)^3=3^2X5^3=1125
5^3*3^3=3375
原式等于（a∧m×a∧n）³等于3375
