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
答
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)