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The quadratic formula is x = (-b ± √b^2 - 4ac)/2a. It is used to find the value of x in the ax^2 + bx + c = 0 form of an quadratic euqation.

en.wikipedia.org/wiki/Quadratic_formula

In elementary algebra, the quadratic formula is the solution of the quadratic equation. There are other ways to solve the quadratic equation instead of using the ...

www.khanacademy.org/math/algebra/quadratics/solving-quadratics-using-the-quadratic-formula/v/using-the-quadratic-formula

With the quadratic formula, we can solve any quadratic equation! Learn how to use it with an example.

www.khanacademy.org/math/algebra/quadratics/solving-quadratics-using-the-quadratic-formula/a/quadratic-formula-explained-article

The quadratic formula helps you solve quadratic equations, and is probably one of the top five formulas in math. We're not big fans of you memorizing formulas, ...

www.purplemath.com/modules/quadform.htm

Demonstrates the use of the Quadratic Formula and compares the QuadraticFormula to the solutions found by factoring.

www.mathpapa.com/quadratic-formula

Shows you the step-by-step solutions using the quadratic formula! This calculator will solve your problems.

www.coolmath.com/algebra/09-solving-quadratics/05-solving-quadratic-equations-formula-01

This algebra lesson explains how to solve quadratic equations using the quadratic formula.

www.virtualnerd.com/tutorials/?id=Alg1_12_01_0007

Note: One of the many ways you can solve a quadratic equation is by using the quadratic formula. The quadratic formula is usually chosen when the other ...

www.mathwarehouse.com/quadratic/quadratic-formula-calculator.php

Quadratic Formula Calculator and solve to find solutions to quadratic equations.

mathworld.wolfram.com/QuadraticFormula.html

The formula giving the roots of a quadratic equation ... From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/QuadraticFormula.html ...