SOLUTION: how do you use undoing with quadratic equation

Question 617026: how do you use undoing with quadratic equation
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
A generic quadratic equation would be
We solve it by isolating the terms with x on one side of the equal sign and "completing the square".
Then we "unsquare" the completed square by taking square roots on both sides and adding the plus/minus options.
You can always do it in an equation with numbers coefficient,
but doing it with generic a, b, and c coefficients leads to the infamous quadratic formula.
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So or
In sum:

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