Quadratic Equations

The name of the this equations i.e Quadratic comes from "Quads" which means square because variable gets squared (like x²).
It is also known as Equation of Degree 2" (because of the "2" on the x)

Here is the Standard Form of a Quadratic Equation looks like this:

a, b and c are known values. a can't be 0.

"x" is the variable or unknown (you don't know it yet)

An example of a Quadratic Equation:

Here we are giving some more Examples

In this one a=2, b=5 and c=3

This one is a little more tricky:

Where is a? In fact a=1, as we don't usually write "1x²"
b = -3
And where is c? Well, c=0, so is not shown.

Oops! This one is not a quadratic equation, because it is missing x² (in other words a=0, and that means it can't be quadratic)