Essential Mathematics Year 9

Solving Monic Quadratic Trinomials

Introduction to quadratic equations and graphs

27:48 Lesson length
14 Chapters
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About this lesson
Quadratic equations are used over and over again throughout all aspects of Mathematics at Years 10, 11 and 12 and it's really important to not only know how to "solve" them but what the process of solving is really telling you. In this video, part of the Year 9 course on Quadratic Equations, I take a look at what it means to solve a quadratic before we look at how. Finding the roots of equations means we can sketch the graphs of quadratics really quickly. This video looks at standard monic quadratic equations as well as perfect squares. I use DESMOS.com to show what the equations look like and take time to discuss the tricks which can be employed. The video is easy to understand but thorough and might contain my signature humour!

Lesson chapters
  1. Welcome
  2. Learning objectives
  3. Recap of past learning
  4. Looking at Perfect Squares
  5. Understanding perfect squares
  6. Monic trinomials
  7. Solving monic trinomials
  8. RECAP: Using the 'T' Method
  9. Example 1: Solving equations with quadratic trinomials
  10. Example 2: Solving equations with quadratic trinomials
  11. Example 3: Solving perfect squares
  12. Example 4: Solving perfect squares
  13. Trick questions to see if you have understood
  14. Final words and summary
Video details
  • Title Solving Monic Quadratic Trinomials
  • Section Introduction to quadratic equations and graphs
  • Course Essential Mathematics Year 9

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