x∧2-2xy-x+y+y∧2-2因式分解

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x∧2-2xy-x+y+y∧2-2因式分解
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x∧2-2xy-x+y+y∧2-2因式分解
x∧2-2xy-x+y+y∧2-2因式分解

x∧2-2xy-x+y+y∧2-2因式分解
=(x-y)^2-(x-y)-2
=(x-y-2)(x-y+1)
o(︶︿︶)o

x^2-2xy+y^2-(x-y)-2
(x-y)^2-1-(x-y+1)
(x-y+1)(x-y-1)-(x-y+1)
(x-y+1)(x-y-2)