Please help! I need to FOIL (4x + 3y) (4x - 3y)?

Question

anonymous · Answer

Ok which ones are first?

anonymous · Answer

4x to the second set of parenthesis?

anonymous · Answer

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! :)

anonymous · Answer

F=4x and 4x
O=4x and 2
I=6 and x
L=6 and 2 :)

phi · Answer

I thought you already knew how to do FOIL.

anonymous · Answer

there does your answer right there thats how you foil^

anonymous · Answer

I do but I still need help! & thank you all I appreciate it  (: