## Quadratic Equations

Subject:

Algebra [1]

Quadratic Equations
This is what a "Standard" Quadratic Equation looks like:
•The letters a, b and c are coefficients (you know those values). They can have any value, except that a can't be 0.
•The letter "x" is the variable or unknown (you don't know it yet)
Here is an example of one:
The name Quadratic comes from "quad" meaning square, because the variable gets squared (like x2).
It is also called an "Equation of Degree 2" (because of the "2" on the x)
More Examples of Quadratic Equations:
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.