来自丁斗章的问题
xy+y^2-xz-yz怎么样因式分解详细步骤
xy+y^2-xz-yz怎么样因式分解详细步骤
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2020-09-0917:46
xy+y^2-xz-yz怎么样因式分解详细步骤
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)