anonymous
  • anonymous
Please help! I need to FOIL (4x + 3y) (4x - 3y)?
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
Ok which ones are first?
anonymous
  • anonymous
4x to the second set of parenthesis?
anonymous
  • anonymous
4x times 4x equals 16x^2 (16x squared - little two after the x) 4x times 3y equals 12xy -3y times 4x equals -12xy -3y times 3y equals -9y^2 (-9y squared - little two after the y) So you get 16x^2 + 12xy - 12xy - 9y^2 Now you combine like terms... Which means +12xy combined with -12xy equals zero. So you are left with 16x^2 - 9y^2. Let me know if you have any problems figuring out what I'm saying! :)

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anonymous
  • anonymous
F=4x and 4x O=4x and 2 I=6 and x L=6 and 2 :)
phi
  • phi
I thought you already knew how to do FOIL.
anonymous
  • anonymous
there does your answer right there thats how you foil^
anonymous
  • anonymous
I do but I still need help! & thank you all I appreciate it (:

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