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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.

Quadratic formula - Wikipedia

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 ...

The quadratic formula | Solving quadratics using the quadratic ...

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.

Understanding the quadratic formula | Solving quadratics using the ...

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, ...

Quadratic Equations: Quadratic Formula - SOS Math

www.sosmath.com/algebra/quadraticeq/quadraformula/quadraformula.html

Consider the general quadratic equation. displaymath90. with tex2html_wrap_inline92 . First divide both sides of the equation by a to get. displaymath96.

The Quadratic Formula Explained | Purplemath

www.purplemath.com/modules/quadform.htm

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

Solve a Quadratic Equation Using the Quadratic Formula - WebMath

www.webmath.com/quadform.html

This page will show you how to use the quadratic formula to get the two roots of a quadratic equation. Fill in the boxes to the right, then click the button to see ...

The Quadratic Formula - Cool Math

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.

Quadratic Formula -- from Wolfram MathWorld

mathworld.wolfram.com/QuadraticFormula.html

Quadratic Formula. EXPLORE THIS TOPIC IN the MathWorld Classroom. The formula giving the roots of a quadratic equation ...

Solve a quadratic equation using the quadratic formula - IXL.com

www.ixl.com/math/algebra-1/solve-a-quadratic-equation-using-the-quadratic-formula

Fun math practice! Improve your skills with free problems in 'Solve a quadratic equation using the quadratic formula' and thousands of other practice lessons.