Factoring 4b-Use Box to factor 4 terms

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
10203 views | 3 ratings
Part of video series
Meets NCTM Standards:
Lesson Summary:

This lesson teaches a nontraditional method of factoring 4 terms into 2 binomials using a box. The key is to ensure that the product of each diagonal of the two diagonals are the same. By pulling out the greatest common factor, figuring out what goes along the right-hand side, and determining what goes up on the top, you can easily factor the equation. The box method is particularly useful when dealing with a lot of minus signs, and it is a great alternative to traditional factoring by grouping and parentheses.

Lesson Description:

This video covers how to factor 4 terms into 2 binomials by using a nontraditional method using a BOX.

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

Questions answered by this video:
  • What is the box method for factoring a polynomial with 4 terms?
  • How do you factor a 4-term polynomial?
  • How can you use a Punnett Square or box to factor a polynomial?
  • How can you factor 2xy + 8x - 3y - 12 using a box?
  • How do you know which terms go in which boxes when you are factoring a 4-term polynomial using the box method?
  • How do you know what goes on the sides of the box in the box method?
  • How do you factor 2ab - 3b^2 - 3b + 2a using the box method?
  • How do you check to make sure that a factored polynomial is the correct answer?
  • How do you factor 6x - 42 + xy - 7y using the box method?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson shows an alternate, very useful method of factoring 4-term polynomials. The box method is often a favorite of students and can especially be used for more visual students.
  • Nikkweiser

    • Currently 5.0/5 Stars.
    She did a very good job in expaining the steps in factoring in an understandable way that makes sense. I actually understand what it means!