(3x^2-2y^2)^4x(2/3y^2-x^2)^2 ,其中3x^2-2y^2=2

问题描述:

(3x^2-2y^2)^4x(2/3y^2-x^2)^2 ,其中3x^2-2y^2=2

(3x^2-2y^2)^4x(2/3y^2-x^2)^2
=(3x^2-2y^2)^4x(2y^2-3x^2)^2/3^2
=(3x^2-2y^2)^6/3^2
=2^6/3^2
=64/9