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# Quadratic Formula (plus)

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Equation / Last modified by mike on 2015/07/30 06:19
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KurtHeckman.Quadratic Formula (plus)

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e6cc25d6-da27-11e2-8e97-bc764e04d25f

This is the equation for the solution of a second order polynomial of the form `aX^2+bX+C = 0` and the solution produces the root with the MINUS radical; i.e

from the formula `(-b +- sqrt(b^2 -4ac))/2a` this is the solution `(-b` **+** `sqrt(b^2 -4ac))/2a`

# Notes

For a derivation of the quadratic formula, see the video: https://www.youtube.com/watch?v=Sidv3d1SEXs&feature=youtu.be

This equation,

**Quadratic Formula (plus)**, is used in 1 calculator.**Calculators**