04 Multiplying Binomials (FOIL).notebook Punnett Square - February 09, 2015 a diagram used to predict all possible trait outcomes of offspring Punnett Square 1. The top flower has a "P" and "p" gene for color, this could be written algebraically as: (P + p) 2. The side flower also has "P" and "p" gene for color, this could be written algebraically as: (P + p) 3. List all possible offspring outcomes: PP+ Pp+ Pp+ pp 4. So, when the parents "multiplied", we found that (P+p)(P+p) = PP+ Pp+ Pp+ pp 5. Algebraically, this is: P2 + 2Pp + p2 Interupting the Punnett Square 1 04 Multiplying Binomials (FOIL).notebook February 09, 2015 an acronym to help you remember how to multiply binomials FOIL O F (x+2)(x-3) I L x2-3x+2x -6 F irst (in each paren) O uter (outer most terms) I nner (inner most terms) L ast (in each paren) Simplify: x2 - 1x - 6 FOIL Demonstration O F 1. (x + 5)(x + 2) = x2 +2x +5x +10 I L = x2 +7x +10 2. (x 2)(x + 7) = x2 +7x -2x -14 = x2 + 5x - 14 StepbyStep Examples 2 04 Multiplying Binomials (FOIL).notebook February 09, 2015 You Try!! 4. (5x + 4)(2x 6) 3. (y 6)(y 3) y2 - 9y + 18 10x 2 - 22x - 24 5. (2x 4)(2x + 5) 6. (13g + 3)(4g + 5) 52g 2 + 77g + 15 4x 2 + 2x - 20 Examples #36 7. (8x + 5)(8x 5) 8. (6x + 1 /2 )(6x + 1 /2 ) 64x 2 - 25 36x 2 + 6x + 1 /4 9. (x + y)(x + y) x2 + 2xy + y 10. (a 3b)(2a 5b) 2 2a 2 - 11ab + 15b 2 Examples #710 3 04 Multiplying Binomials (FOIL).notebook February 09, 2015 Today's Math Journal Questions Day 4 Question: ______________________ (Date) Why do we use the “FOIL” method for multiplying binomials (ie: Why does it work?) MJ ? 94 Homework: Worksheet 9-4 Homework 4

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