2x^2-xy-y^2因式分解

问题描述:

2x^2-xy-y^2因式分解

2x^2-xy-y^2
=x²+x²-xy-y²
=(x²-y²)+(x²-xy)
=(x+y)(x-y)+x(x-y)
=(x-y)(2x+y)
有不明白的可以追问!谢谢!
祝学习进步!