Multiplying Polynomials 3
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Lesson Summary:
In this lesson on multiplying polynomials, students learn how to use the box method to multiply a polynomial by a polynomial. By creating a box with the terms of each polynomial on the sides, students can easily keep track of all the multiplications and add the like terms together to get the final answer. The teacher demonstrates this method with two examples, and also shows how it can be used with binomials.
Lesson Description:
Part 3 of Multiplying Polynomials covers how to multiply a polynomial by a polynomial using the box method.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- How do you multiply polynomials?
- What are some methods for multiplying polynomials?
- What is the box method for multiplying polynomials?
- How do you multiply two trinomials like (x^2 - 3x + 2)(x^2 - 4x - 6) using the box method?
- How do you multiply (2x^2 - x + 4)(3x + 1) using the box method?
- How do you multiply (2x - 3)(5x + 9) using the box method and the vertical long multiplication method?
- Does it matter if you multiply polynomials using a long rectangle or a tall rectangle?
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Staff Review
The box method of multiplying polynomials is explained in this lesson. All steps involved in this method are explained very well in the several different example problems that are shown in this video.
