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Mathematics 7 Online
OpenStudy (anonymous):

Solve by completing the square: x2 - 4x + 2 = 0

OpenStudy (whpalmer4):

Rearrange to have the numbers on the right side of the =. Add half the coefficient of the x term, squared, to both sides. Rewrite the left hand side as a perfect square. Take the square root of both sides and solve for x.

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