quadratic formula: Meaning and Definition of

quadrat'ic for'mula

Pronunciation: [key]
— Math. Math.
  1. the formula for determining the roots of a quadratic equation from its coefficients:(−b ± b − 4ac&fullradicover;)/2a. x =
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.