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Figuring Out the Discriminant

Author: Seth Marx

Discriminant

Discriminant: The part of the quadratic formula under the square root (radical) sign..  b2 - 4ac..

 

THE DISCRIMINANT ONLY TELLS US THE NUMBER OF SOLUTIONS... NOT WHAT THE ANSWERS ARE

 

Use this site for more assistance:

www.mathwarehouse.com/quadratic/discriminant-in-quadratic-equation.php

 

Interpreting the Discriminant

This video will explain the importance of the discriminant and how to use it to find the number of solutions.

Graphs

Watch the video first before looking at these graphs.  These are the graphs of the 2 sample problems in the video.