9.3 FACTORING TRiNOMIALS: x^2 + bx + c by T Benjamin

Review 9.1: Factors and GCF

trbenjamin — 2014-03-02 15:44:02 UTC

A. Factor and Classify

12: 1, 2, 3, 4, 6, 12 so Composite

B. Prime Factorization

36a^4b^2c : 2*2*3*3aaaabbc

C. Find the GCF

36a^2b and 24a^4b^2.....

GCF is 12a^2b

Review 9.2: Factoring Using the Distributive Property

trbenjamin — 2014-03-02 15:44:20 UTC

A. Factoring out Monomials:

3x^2 - 12x ==> 3x(x - 4)

B. Factor By Grouping

2x^2 +6x - x - 3 ==> (2x -1)(x + 3)

C. Solving Polynomials by Factoring

(3x - 2) (x + 4) = 0, then x = 2/3, -4

Day 1: Steps to Factoring these trinomials

trbenjamin — 2014-03-02 16:03:58 UTC

1. Remember Ax^2 + Bx + C

2. List ALL of the factors of C (both pos and neg)

3. Determine which factors add/subract to make B

4. Create your factor parenthesis: ( )( )

5. Plug your variables and factors, Remember your signs

6. Check the factors using multiplication

Another 9.2 Lesson: Cool Math

trbenjamin — 2014-03-02 16:10:37 UTC

More on Factoring Trinomials (simple)

trbenjamin — 2014-03-02 16:12:35 UTC

Day 2: Steps to Solving by Factoring

trbenjamin — 2014-03-02 16:20:24 UTC

1. Set trinomial equation to = 0

2. Factor Trinomial ==> (x + __)(x + __) = 0

3. Set EACH factor to equal zero

4. Solve each equation

5. Remember:

the degree of the polynomial = the number of solns

2nd degree ==> 2 Solutions

3rd degree ==> 3 solutions

NOTE: Video uses factor by grouping

(we'll do this for 9.3)

Zero Product Property Rule

trbenjamin — 2014-03-02 16:29:46 UTC

Cool Math: Solve by Factoring

trbenjamin — 2014-03-02 16:32:14 UTC

Snowball Activity

trbenjamin — 2014-03-02 16:34:41 UTC

Half: Create Trinomials expressions: Factor

Half: Create Trinomial equations: Solve

trbenjamin — 2014-03-04 15:08:46 UTC

Partner Activity

trbenjamin — 2014-03-04 15:17:09 UTC

Find the notecards with correct factors, solution

and trinomial