1. Algebra I B. MacDonald

2.  Factoring using grouping Factoring using grouping  Practice Problems Practice Problems

3.  To factor using grouping you’ll have four terms  GOAL is to get (binomial)(binomial)  Is there a GCF you can factor out first?  Group first two terms together & last two terms together 4ab + 8b + 3a + 6  Factor out GCF of each set 4b(a + 2)+3(a + 2) Continue Example  Continue Example  Index NO

4.  Now factor out GCF of each set.  Notice they both have (a + 2)  Group leftovers together (a + 2)(4b+3) 4b(a + 2) +3(a + 2) Let’s check our answer  Let’s check our answer  Index

5. FOIL (Hand shakes & high fives) (a + 2)(4b+3) 4ab + 3a + 8b + 6 Yes Original Problem: 4ab + 8b + 3a + 6 Does it check? Practice  Practice  Index

6. A. 2xy + 7x – 2y – 7 B. 35x – 5xy + 3y – 21 C. x 2 + 2x + 4x + 8 D. x 2 + 6x – 3x - 18 (2y + 7)(x – 1) (5x – 3)(7 – y) (x + 4)(x + 2) (x – 3)(x + 6) Index ANSWER - A ANSWER - B ANSWER - C ANSWER - D