因式分解xy²-2xy+2y-4

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因式分解xy²-2xy+2y-4

xy²-2xy+2y-4
=xy(y-2)+2(y-2)
=(y-2)(xy+2)

(y-2)(xy+2)

xy²-2xy+2y-4
=xy(y-2)+2(y-2)
=(y-2)(xy+2)

xy^2-2xy+2y-4
=xy(y-2)+2(y-2)
=(xy+2)(y-2)

xy^2-2xy+2y-4
=xy(y-2)+2(y-2)
=(xy+2)(y-2)

xy²-2xy+2y-4
=(xy²-2xy)+2y-4
=xy(y-2)+2(y-2)
=(xy+2)(y-2)

xy²-2xy+2y-4 =xy(y-2)+2(y-2)=(y-2)(xy+2)

最后结果为(xy+2)(y-2)