SOLUTION: please factor by grouping x-y-x^2+2xy-y2

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Question 73440: please factor by grouping
x-y-x^2+2xy-y2
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
please factor by grouping
x-y-x^2+2xy-y2
=(x-y)-(x^2-2xy+y^2
=(x-y)-(x-y)^2
=(x-y)[1-(x-y)]
=(x-y)(1-x+y)
Cheers,
Stan H.