Solutions:
where x is an unknown, a is referred to as the quadratic coefficient, b the linear coefficient, and c the
constant. The numerals a, b, and c are coefficients of the equation, and they represent known numbers. For
example, a cannot be 0, or the equation would be linear rather than quadratic.
A quadratic equation can be
solved in multiple ways, including factoring, using the quadratic formula, completing the square, or graphing.
Only the use of the quadratic formula, as well as the basics of completing the square, will be discussed here
(since the derivation of the formula involves completing the square). Below is the quadratic formula, as well as
its derivation.