TripleA007
Solve the quadratic equation x2 + 12x + 20 = 0 by completing the square.



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Mertsj
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Get the 20 over to the right side out of the way.

Mertsj
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Then divide the coefficient of x by 2, square that result and add that number to both sides

Mertsj
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Then factor the left side.

Mertsj
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Then take the square root of both sides.

Mertsj
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Solve the resulting equation.

SnuggieLad
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Well done Mertsj!

SnuggieLad
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Not like you need the applause...