因式分解(X2-1)(Y2-1)-4XY请高人相助

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因式分解(X2-1)(Y2-1)-4XY请高人相助因式分解(X2-1)(Y2-1)-4XY请高人相助因式分解(X2-1)(Y2-1)-4XY请高人相助=x²y²-x²-y

因式分解(X2-1)(Y2-1)-4XY请高人相助
因式分解(X2-1)(Y2-1)-4XY
请高人相助

因式分解(X2-1)(Y2-1)-4XY请高人相助
=x²y²-x²-y²+1-4xy
=(x²y²-2xy+1)-(x²+2xy+y²)
=(xy-1)²-(x+y)²
=(xy-1+x+y)(xy-1-x-y)

x2+y2-x2y-4xy-1因式分解因式分解x2+y2-xy-x-y+1 2xy-x2+1-y2因式分解因式分解(X2-1)(Y2-1)-4XY请高人相助 2x2+xy-3y2+x+4y-1因式分解 (x2+xy+y2)-4xy(x2+y2)因式分解因式分解：x3+（y-1）x2-2xy-y2 x2-3xy+2y2+y+1怎么因式分解 X2-3xy+2y2+y+1怎么因式分解 -x2-4y2+4xy因式分解 4xy-(x2-4y2)怎么因式分解因式分解 4x2-4xy+y2-a2 x2+3xy-4y2因式分解 4x2+3xy-2y2因式分解 X2-3xy-4y2因式分解告诉因式分解：3x2+4xy-y2 3x2+4xy-y2因式分解 3x2-4xy+y2 因式分解