x^3-4x^2y+xy^2

问题描述:

x^3-4x^2y+xy^2

x^3-4x^2y+xy^2
=x(x²-4xy+y²)
=x(x²-4xy+4y²-3y²)
=x[(x-2y)²-3y²]
=x(x-2y+√3y)(x-2y-√3y)