Use the Quadratic Formula to Find Roots of the Function

Get to the root of the problem with an instructive lesson! Learners find the roots of a function using the quadratic formula. A video shows the process and includes an explanation of the substitution steps. 

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CCSS: Adaptable
Instructional Ideas

  • After showing the video, give practice problems with a variety of solution types: rational, irrational, repeated, and complex
  • Post the video as a resource to learners needing extra support
Classroom Considerations

  • Requires an awareness of the importance of a root of a function
  • There are 29 videos in this series dedicated to the review of functions
Pros

  • Color aids explain substitution into the quadratic formula
Cons

  • Shows only an example with integer solutions
Common Core