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Foil2

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Foil2

1. 1. FOIL<br />Front---Outer---Inner---Last<br />
2. 2. (2x + 5)(3x + 5)<br />F + O + I + L<br />(2x*3x) + (2x*5) + (5*3x) + (5*5)<br />6x² + 10x + 15x + 25<br />6x² + 25x +25 <br />1. <br />
3. 3. F + O + I + L<br />(3x*4x) + (3x*9) + (9*4x) + (9*9)<br />12x² + 27x + 36x +81<br />12x² +63x + 81<br />2. (3x + 9 )(4x +9)<br />
4. 4. (-2x + 7)(3x + 8)<br />F + O + I + L<br />(-2x*3x) + (-2x*8) + (7*3x) + (7*8)<br />-6x² - 16x + 21x + 56<br />-6x² + 5x +56<br />
5. 5. (2x – 5)(3x + 8)<br />F + O + I + L<br />(2x*3x) + (2x*8) + (-5*3x) + (-5*8)<br />6x² + 16x -15x -40<br />6x² + x - 40<br />
6. 6. (4X -2)(X-5)<br />F + O + I+ L<br />(4x*x) + (4x*-5) + (-2*x) + (-2*-5)<br />4x² + -20x – 2x + 10<br />4x² -22x + 10<br />
7. 7. (3x + 7)(4x-2)<br />F + O + I+ L<br />(3x*4x) + (3x*-2) + (7*4x) + (7*-2)<br />12x² + -6x +28x - 14<br />12x²+22x - 14<br />
8. 8. 7. (-2X +4)(4X-3)<br />F + O + I+ L<br />(-2x*4x) + (-2x*-3) + (4*4x) + (4*-3)<br />-8x² + 6x +16x - 12<br />-8x² +22x - 12<br />
9. 9. 8. (X -3)(X+3)<br />F + O + I+ L<br />(x*x) + (x*3) + (-3*x) + (-3*3)<br />x² + 3x -3x - 9<br />x² - 9<br />
10. 10. 9. (2X +5)(3X+7)<br />F + O + I+ L<br />(2x*3x) + (2x*7) + (5*3x) + (5*7)<br />6x² + 14x + 15x + 35<br />6x² + 29x + 35<br />
11. 11. 10. (6X -3)(2X+5)<br />F + O + I+ L<br />(6x*2x) + (6x*5) + (-3*2x) + (-3*5)<br />12x² + 30x - 6x - 15<br />12x² + 24x - 15<br />