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2x2 - 2x + xy - y
= 2x2 + xy - 2x - y
= x(2x + y) - (2x + y)
= (2x + y)(x - 1)
2x squared plus 2x plus xy plus y or
2x(x+1) + y(x+1) or
(x+1)(2x+y)
2x squared - 2x plus xy - y or
2x(x-1) + y(x-1) or
(x-1)(2x+y)
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