已知x^(3m)=2 y^(2m)=3 求（x^(2m)）^3+(y^m)^6-(x^2*y)^3m * y^m

已知x^(3m)=2 y^(2m)=3
（x^(2m)）^3+(y^m)^6-(x^2*y)^3m * y^m
=x^6m+y^6m-x^6my^4m
=(x^3m)^2+(y^2m)^3-(x^3m)^2*(y^2m)^2
=2^2+3^3-2^2*3^2
=4+27-36
=-5