Factor Quadratics (GCF then Guess and Check) a not = 1
How to #factor #quadratics when a does not equal 1. i.e. there is a number in front of the x² term.
In this video we will #Undistribute the #GCF then #UnFOIL using Guess and Check.
UnDistribute the greatest common factor (GCF) -this is the number that divides the three terms. Now we have: g(ax² + bx + c)
The answers look like this: g(ax + ?)(x + ?) where the numbers that take the place of the question marks multiply to the "c" constant term. Then re-FOIL the factors to check if the inners and outers add to the b (x) term.
When learning, it may be a good idea to list all the pairs of numbers that multiply to the constant term.
This video could work for #Algebra students who were absent, or in a flipped classroom.
This PowerPoint is available to purchase: teacherspayteachers.com/Product/11684096 or
https://www.teacherspayteachers.com/S...
0:00 Intro
0:18 Review Expand
2:00 Strategy Overview
2:52 ID Factoring Strategy
4:41 Factor 15x² + 81x + 30
7:29 Factor 10x² - 35x + 30
10:06 Factor 21x² - 120x - 36
13:36 Factor 6x² +x 28 - 48
16:34 Time Saver Strategy
18:17 Wrap-Up