因式分解xy-y∧2-yz+xz,
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因式分解xy-y∧2-yz+xz,
因式分解xy-y∧2-yz+xz,
因式分解xy-y∧2-yz+xz,
xy-y^2-yz+xz
=y(x-y)+z(x-y)
=(y+z)(x-y)
=y(x-y)+z(x-y)=(x-y)(y+z)
=y(x-y)+z(x-y)
=(x-y)(y+z)
(x-y)(y+z)
xy-y∧2-yz+xz
=y(x-y)+z(x-y)
=(x-y)(y+z)
原式=y(x-y)+z(x-y)=(y+z)(x-y)
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