2x的三次方-3x的平方+3y的平方-2xy的平方

2个回答

2x^3-3x^2+3y^2-2xy^2
=2x^3-2xy^2-3x^2+3y^2
=2x(x^2-y^2)-3(x^2-y^2)
=(x^2-y^2)2x-3)
=(x+y)(x-y)(2x-3)