# Quadratic Formula (minus)

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Equation / Last modified by mike on 2015/07/30 06:19
solution - sqrt() =
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KurtHeckman.Quadratic Formula (minus)
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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