Sunday, February 12, 2012

Introduction to Quadratic Equations

A quadratic equation is an equation that involves only two things besides numbers: a variable and a square of this variable.




Example:

2x%5E2-x-1=0
x%5E2-1=0

We can see that the first equation is written slightly different from the next two.

The form ax%5E2%2Bbx%2Bc=0 where a,b,c are constants,
is called the general form.

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