Quadratic Formula

The quadratic formula is used to find the solution to a quadratic or second degree equation.  Notice that the right hand side of the equation has variables a, b, and c.  These variables are the coefficients of the terms of the quadratic equation.  Remember the standard form is .

Example 1:

                            first, the equation must be in standard form move terms to one side

                                                      identify a = 1, b = 8, c = 9

                                             use the quadratic formula, substitute values

                           simplify radical

                      solve for r

      and                     quadratic equations have 2 solutions

General Algebra Tips

The views and opinions expressed in this page are strictly those of Mary Lou Baker.
The contents of this page have not been reviewed or approved by Columbia State Community College.

This page was edited on 15-Nov-2007