来自姜田华的问题
求解一道数学题;(xy-1)^2+(x+y-2)(x+y-2xy)分解因式
求解一道数学题;(xy-1)^2+(x+y-2)(x+y-2xy)分解因式
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2020-07-21 21:20
求解一道数学题;(xy-1)^2+(x+y-2)(x+y-2xy)分解因式
求解一道数学题;(xy-1)^2+(x+y-2)(x+y-2xy)分解因式
(xy-1)^2+(x+y-2)(x+y-2xy)
=(xy-1)^2+(x+y)^2-2(xy+1)(x+y)+4xy
=(xy+1)^2+(x+y)^2-2(xy+1)(x+y)
=[(xy+1)-(x+y)]^2
=(1-x)^2(1-y)^2