What is the formula for a quadratic equation??

Listen to this clip

It will be worth your while!

http://www.youtube.com/watch?v=O8ezDEk3qCg 

The general quadratic equation can be written as

y = ax² + bx + c  where a, b and c are constants.

 

If you are looking for the equation that gives the solutions to the quadratic equation set equal to zero, it is

$$x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$$

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