2xy-x2+1-y2因式分解

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2xy-x2+1-y2因式分解
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2xy-x2+1-y2因式分解
2xy-x2+1-y2因式分解

2xy-x2+1-y2因式分解
2xy-x2+1-y2
=1-(x²-2xy+y²)
=1-(x-y)²
=(1+x-y)(1-x+y)

答案为:1-x∧2+2xy-y∧2