Factoring 10 - Trinomials part 3 - get one factor!

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
7070 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, we continue factoring trinomials into two binomials when the coefficient of x-squared is not 1. Using the product and sum method, we learn a shortcut for finding one correct factor, and then factor out the greatest common factor to find the other factor. We see three examples of this method, including a non-factorable trinomial. The lesson emphasizes that there is not just one method for factoring, and that as long as you can get the correct factors, it's okay to use a method that works best for you.

Lesson Description:

This is part 3 of factoring trinomials into 2 binomials when the coefficient of x-squared is not 1. It is a continuation of part 2 showing three more examples of using the short-cut (sneaky) method of first finding one correct factor using the product and sum.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • How do you factor 6x^2 + 23x + 21?
  • Is there a shortcut method for factoring a trinomial?
  • How do you factor a trinomial by finding one factor and using it to find the other factor?
  • How can you check to make sure that the factored form of a trinomial is correct?
  • How do you factor 9x^2 + 3x + 2?
  • What happens if you cannot factor a trinomial?
  • How do you factor 3x^2 + 22x - 16?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson is a continuation of the previous lesson -- more examples of factoring trinomials by using a shortcut trick for finding one factor and then using that factor to find the second factor. Many good examples are explained step by step.