因式分解x^2y^2+xy-x^2+y^2+x+y+2抄错提了，是x^2y^2+xy-x^2-y^2+x+y+2

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因式分解x^2y^2+xy-x^2+y^2+x+y+2抄错提了，是x^2y^2+xy-x^2-y^2+x+y+2因式分解x^2y^2+xy-x^2+y^2+x+y+2抄错提了，是x^2y^2+xy-x

因式分解x^2y^2+xy-x^2+y^2+x+y+2抄错提了，是x^2y^2+xy-x^2-y^2+x+y+2
因式分解x^2y^2+xy-x^2+y^2+x+y+2
抄错提了，是x^2y^2+xy-x^2-y^2+x+y+2

因式分解x^2y^2+xy-x^2+y^2+x+y+2抄错提了，是x^2y^2+xy-x^2-y^2+x+y+2
原式=（x^2y^2-x2-y2+1)+(xy+x+y+1)
=(x^2-1)(y^2-1)+(x+1)(y+1)
=(x+1)(y+1)[(x-1)(y-1)+1]
=(x+1)(y+1)(xy-x-y+2)

因式分解：x方y+2xy+y 因式分解：x×x-xy-2y×y-x-y (x+y)/x /(x-(2xy-y^2)/x) 因式分解 -xy^2(x+y)^3+x(x+y)^2因式分解因式分解:8(x-2y)-x(7x+y)+xy. 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) 2x(x-y)+4xy(y-x) 因式分解2x(x-y)+4xy(y-x) 因式分解 2x^2-xy-y^2因式分解因式分解x^2+xy-2y^2 X^2Y-2XY^2 因式分解因式分解:-x^2+2xy-y^2 xy+2x+y+2因式分解因式分解:x^2y+xy^2=? x^2-xy-4+2y因式分解 xy-2x+y-2因式分解, (x+2y)^2-8xy 因式分解因式分解x^2-3xy+y^2 x^2-3xy+y^2因式分解