factrization
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Answer:
2x^2 - 2x + 4 = 0
2x^2 + 2x - 4x +4 = 0
2x (x+ 1 ) - 4 ( x + 1 ) = 0
(2x - 4 ) (x + 1 ) = 0
x = 2 , x = -1 .
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