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# Algebra 6 Point 9

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### Algebra 6 Point 9

1. 1. 6.9 Multiplying Binomials<br />Objective: <br /><ul><li>To multiply 2 binomials
2. 2. To multiply a binomial by a trinomial
3. 3. To learn about FOIL</li></ul>Frameworks: 10.P.3<br />
4. 4. How would you multiply . . .<br />(x + 3)(x + 5)<br />1. Distribute the first x to the x and the 5<br />2. Distribute the 3 to the x and the 5<br />FOIL <br />http://www.freemathhelp.com/using-foil.html<br />
5. 5. FOIL<br />(x + 3)(x + 5)<br />First terms: x and x x2<br />Outside terms: x and 5 5x<br />Inside terms: 3 and x 3x<br />Last terms: 3 and 5 15<br />Answer: x2 + 8x + 15<br />
6. 6. Try some:<br />(2x + 1)(7x – 4)<br />(a – 3)(a + 4)<br />(5y – 2)(27 + 4)<br />
7. 7. Try some:<br />(5a –b)(-2a + b)<br />(6x – y)(-x – y)<br />
8. 8. Turn to page 230<br />Do 1-4<br />