Factor Quadratics where "a" does not equal 1 -Guess and Check Strategy
How to #factor #quadratics when a does not equal 1. i.e. there is a number in front of the x² term.
The questions look like this: ax² + bx + c. The answers look like this: (ax + ?)(x + ?) where the numbers that take the place of the question marks multiply to the "c". 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 "c" (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/11657655 or
https://www.teacherspayteachers.com/S...
0:00 Intro and Objectives
1:54 Review FOIL
2:48 Strategy Overview
3:37 ID Factoring Strategy
5:27 Factor 7x² + 17x + 6
7:57 Factor 3x² + 16x + 20
10:07 Factor 2x² - 11x + 12
12:37 Factor 2x² - 5x - 12
15:38 Factor 5x² - 2x - 24
19:01 Wrap-Up