SOLUTION: HOW DO YOU SOLVE A QUADRATIC EQUATION BY COMPLETING THE SQUARE

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Question 589117: HOW DO YOU SOLVE A QUADRATIC EQUATION BY COMPLETING THE SQUARE
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
I'll pick a random quadratic:

Set equal to zero to find roots

Get the constant term on the right side
by subtracting from both sides

Divide both sides by

Now take 1/2 of the coefficient of ,
divide it by , square it, and add it
to both sides

The left side will automatically become a perfect square


Now take the square root of both sides



and also, using the (-) square root,
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