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Algebra 6 Point 9
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Algebra 6 Point 9

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FOIL

FOIL

Published in: Technology, Education

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Transcript

  • 1. 6.9 Multiplying Binomials
    Objective:
    • To multiply 2 binomials
    • 2. To multiply a binomial by a trinomial
    • 3. To learn about FOIL
    Frameworks: 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

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