X 2 -4x+4=12

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X²-4x+4=12

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X2-4x+4=12

\(x^2-4x+4=12 \\ (x-2)^2 = 12\\ (x-2)=\pm \sqrt{12}\\ x=2\pm 2\sqrt{3}\)

Rom Dec 14, 2015

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