Mammoth Memory

Quadratic Equation

Quadratic Equation is an equation which contains an `x^2` term (or if you want to get technical it is an equation containing a single variable of degree2 with no higher power).

1. a quadbike with a rat.jpg

A quad bike with a rat (quadratic) driving, pulling an X-ray (X) of a fish in a square (2) fish tank.

  

Example 1

A quadratic equation is an equation which contains a `x^2` term.

`y=x^2`

`y=x^2+2`

`y=x^2+x-4`

`y=x^2+2x-6`

 

All of the equations contain a `x^2` term therefore they are called quadratic equations.

 

Example 2

`ax^2+bx+c=0`

This is a well known quadratic equation i.e. containing `x^2`

 

Example 3

`x^2+y^2=z^2`

`x^3+x^2=0`

These are NOT quadratics because the first has another variable with degree squared and the second has one with a higher power than 2.

 

 

 

 

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