Math Help - Quadratic Equation

This section of Math Help online deals with quadratic equations.

What is a quadratic equation?

Quadratic means second degree, so quadratic equation means any equation in which the highest degree of x is two. Any quadratic equation can be expressed in the form

ax ² + bx + c = 0

Definition of a quadratic equation

A quadratic equation is an equation of the form    ax ² + bx + c = 0  of which the roots are given by the quadratic formula:

where b ² - 4ac is called the  discriminant.

Quadratic formula

The values of x or roots  of x which satisfy the quadratic equation ax ² + bx + c = 0 are:

 This quadratic equation formula is very important and must be remembered.

• Solving Quadratic Equations
• Proof of Quadratic Formula