Showing posts with label sum-product rule. Show all posts
Showing posts with label sum-product rule. Show all posts

Thursday, January 29, 2009

Factoring Ep.1: Guideline to Factoring - 6:34



KEY CONCEPTS:

First step to factoring, is to find a common factor.

After that, regardless of whether there is a common factor or not is to count the number of terms.

Based on that will determine how to Factor

Monday, January 26, 2009

Factoring Ep.5: Factor Quadratics (Trinomials), a not = 1 - 10:16



KEY CONCEPTS:

Notice that your trinomial is a quadratic function, where the value of a is NOT equal to 1.

Use the sum-product rule

i.) find 2 numbers that multiply to your "a" and "c" value, that ALSO ADD up to your "b" value.
ii.) expand your middle term
iii.) factor by grouping
iv.) answer should be a set of binomials