SOLUTION: Can you please help show me how to solve this quadratic equation by completing the square. x^2 + 4x

SOLUTION: Can you please help show me how to solve this quadratic equation by completing the square. x^2 + 4x - 12 = 0

Question 170892: Can you please help show me how to solve this quadratic equation by completing the square.
x^2 + 4x - 12 = 0
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
solve this quadratic equation by completing the square.
x^2 + 4x - 12 = 0
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x^2 + 4x + ? = 12 + ?
x^2 + 4x + (4/2)^2 = 12 + (4/2)^2
x^2 + 4x + 4 = 12 + 4
(x+2)^2 = 16
x+2 = 4 or x+2 = -4
x = 2 or x = -6
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Cheers,
Stan H.
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