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5.9 Continued….

5.9 Continued…. Multiplying a Binomial by a Binomial. Steps:. Distribute the 1 st term Distribute the 2 nd term Add like terms Ex: (x+5) (x+8). “ F O I L ” Multiplication. F irst O uter I nner L ast. (x + 2) (x + 3). x 2. + 3x. + 2x. + 6. x 2 + 5x + 6.

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5.9 Continued….

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  1. 5.9 Continued…. Multiplying a Binomial by a Binomial

  2. Steps: • Distribute the 1st term • Distribute the 2nd term • Add like terms Ex: (x+5) (x+8)

  3. “F O I L” Multiplication • F irst • O uter • I nner • L ast (x + 2) (x + 3) x2 + 3x + 2x + 6 x2 + 5x + 6

  4. Use FOIL to multiply (3x + 2)(x + 5) 3x2 + 15x + 2x + 10 3x2 + 17x + 10

  5. Use FOIL to multiply (2x2 - 1)(x - 3) 2x3 - 6x2 - x1 + 3 2x3 - 6x2 – x + 3

  6. Use FOIL to multiply (5x2 – 2x)(x - 7) + 14x1 5x3 - 35x2 -2x 2 5x3 - 37x2 + 14x

  7. Use FOIL to multiply (1 - 2x2) (1 + 3x) 1 + 3x1 -2x2 + 6x3 6x3 - 2x2 + 3x+ 1

  8. Use FOIL to multiply (1 - 2x2) (1 + 3x) 1 + 3x1 -2x2 - 6x3 -6x3 - 2x2 + 3x+ 1

  9. Use FOIL to multiply (4xy - y2) (xy + y2) 4x2y2 + 4xy3 -xy 3 - y4 4x2y2 + 3xy3 – y4

  10. Homework Page 242 (22-34) all

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