因式分解x^3-4xy^2-2x^2y+8y^3

分类: 作业答案 • 2021-12-23 10:39:30

问题描述：

答

=(x^3+8y^3)-2xy(x+2y)
=(x+2y)(x^2-2xy+4y^2)-2xy(x+2y)
=(x+2y)(x^2-4xy+4y^2)
=(x+2y)(x-2y)^2