AlgebraLAB
 
 
Site Navigation
Site Directions
Search AlgebraLAB
Activities
Career Profiles
Glossary
Lessons
Reading Comprehension Passages
Practice Exercises
Science Graphs
StudyAids: Recipes
Word Problems
Project History
Developers
Project Team






Algebra I Recipe: The Discriminant
Discriminant – the (b² - 4ac) in the quadratic formula
The value of (b² - 4ac) tells how many solutions or x-intercepts the quadratic equation will have.


  • If (b² - 4ac) > 0, there are two real solutions or x-intercepts.
  • If (b² - 4ac) = 0, there is one real solution or x-intercept.
  • If (b² - 4ac) < 0, there are no real solutions or x-intercepts.
ExamplesExamples:
x² - 6x + 10 = 0
x² - 6x + 9 = 0
x² - 6x + 8 = 0



G Redden

Show Related AlgebraLab Documents


Return to STEM Sites AlgebraLAB
Project Manager
   Catharine H. Colwell
Application Programmers
   Jeremy R. Blawn
   Mark Acton
Copyright © 2003-2023
All rights reserved.