xy+y^2-xz-yz怎么样因式分解详细步骤

问题描述:

xy+y^2-xz-yz怎么样因式分解详细步骤

xy+y^2-xz-yz
=xy-xz+y^2-yz
=(xy-xz)+(y^2-yz)
=x(y-z)+y(y-z)
=(y-z)(x+y)