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    Foil2 Foil2 Presentation Transcript

    • FOIL
      Front---Outer---Inner---Last
    • (2x + 5)(3x + 5)
      F + O + I + L
      (2x*3x) + (2x*5) + (5*3x) + (5*5)
      6x² + 10x + 15x + 25
      6x² + 25x +25
      1.
    • F + O + I + L
      (3x*4x) + (3x*9) + (9*4x) + (9*9)
      12x² + 27x + 36x +81
      12x² +63x + 81
      2. (3x + 9 )(4x +9)
    • (-2x + 7)(3x + 8)
      F + O + I + L
      (-2x*3x) + (-2x*8) + (7*3x) + (7*8)
      -6x² - 16x + 21x + 56
      -6x² + 5x +56
    • (2x – 5)(3x + 8)
      F + O + I + L
      (2x*3x) + (2x*8) + (-5*3x) + (-5*8)
      6x² + 16x -15x -40
      6x² + x - 40
    • (4X -2)(X-5)
      F + O + I+ L
      (4x*x) + (4x*-5) + (-2*x) + (-2*-5)
      4x² + -20x – 2x + 10
      4x² -22x + 10
    • (3x + 7)(4x-2)
      F + O + I+ L
      (3x*4x) + (3x*-2) + (7*4x) + (7*-2)
      12x² + -6x +28x - 14
      12x²+22x - 14
    • 7. (-2X +4)(4X-3)
      F + O + I+ L
      (-2x*4x) + (-2x*-3) + (4*4x) + (4*-3)
      -8x² + 6x +16x - 12
      -8x² +22x - 12
    • 8. (X -3)(X+3)
      F + O + I+ L
      (x*x) + (x*3) + (-3*x) + (-3*3)
      x² + 3x -3x - 9
      x² - 9
    • 9. (2X +5)(3X+7)
      F + O + I+ L
      (2x*3x) + (2x*7) + (5*3x) + (5*7)
      6x² + 14x + 15x + 35
      6x² + 29x + 35
    • 10. (6X -3)(2X+5)
      F + O + I+ L
      (6x*2x) + (6x*5) + (-3*2x) + (-3*5)
      12x² + 30x - 6x - 15
      12x² + 24x - 15