# Definitions for **quadratic equation**

### This page provides all possible meanings and translations of the word **quadratic equation**

### Random House Webster's College Dictionary

quadrat′ic equa′tion(n.)

an equation containing a single variable of degree 2. Its general form is ax2+bx+c= 0, where x is the variable and a, b, and c are constants (a≠ 0).

**Category:**Math

#### Origin of **quadratic equation**:

1680–90

### Princeton's WordNet

quadratic equation, quadratic(noun)

an equation in which the highest power of an unknown quantity is a square

### Wiktionary

quadratic equation(Noun)

a polynomial equation of the second degree.

### Freebase

Quadratic equation

In mathematics, a quadratic equation is a univariate polynomial equation of the second degree. A general quadratic equation can be written in the form where x represents a variable or an unknown, and a, b, and c are constants with a ≠ 0. ² The constants a, b, and c are called respectively, the quadratic coefficient, the linear coefficient and the constant term or free term. Quadratic equations can be solved by factoring, completing the square, using the quadratic formula, and graphing.²

### The Nuttall Encyclopedia

Quadratic Equation

an equation involving the square of the unknown quantity.

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"quadratic equation." *Definitions.net.* STANDS4 LLC, 2014. Web. 18 Apr. 2014. <http://www.definitions.net/definition/quadratic equation>.