Math Definitions - Letter Q

Quadratic Equation

Definition of Quadratic Equation

A quadratic equation is a special type of algebraic equation in which the highest power of the variable (usually \(x\)) is \(2\).

So, \(x^2 - 2x + 5 = 0\) is a quadratic equation, but \(x^4 - 17x^2 + 15 x - 9 = 0\) is not.

Quadratic equations are usually written

Definition of Quadratic Equation

For example, \(3x^2 + 17 x - 54 = 0\) is a quadratic equation.

Quadratic equations may have \(0\), \(1\) or \(2\) solutions.


The aim of this dictionary is to provide definitions to common mathematical terms. Students learn a new math skill every week at school, sometimes just before they start a new skill, if they want to look at what a specific term means, this is where this dictionary will become handy and a go-to guide for a student.


Year 1 to Year 12 students

Learning Objectives

Learn common math terms starting with letter Q

Author: Subject Coach
Added on: 6th Feb 2018

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