FOIL

2. To multiply a binomial by a trinomial

3. To learn about FOILFrameworks: 10.P.3

4. How would you multiply . . . (x + 3)(x + 5) 1. Distribute the first x to the x and the 5 2. Distribute the 3 to the x and the 5 FOIL http://www.freemathhelp.com/using-foil.html

5. FOIL (x + 3)(x + 5) First terms: x and x x2 Outside terms: x and 5 5x Inside terms: 3 and x 3x Last terms: 3 and 5 15 Answer: x2 + 8x + 15

6. Try some: (2x + 1)(7x – 4) (a – 3)(a + 4) (5y – 2)(27 + 4)

7. Try some: (5a –b)(-2a + b) (6x – y)(-x – y)

8. Turn to page 230 Do 1-4