SOLUTION: Using FOIL, simplify the expression "(3x + 2)(3x - 2)". Show that a particular factoring formula leads to the same answer.

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Question 34744: Using FOIL, simplify the expression "(3x + 2)(3x - 2)". Show that a particular factoring formula leads to the same answer.
Found 2 solutions by QueenVoda, scoop:
Answer by QueenVoda(11) About Me  (Show Source):
You can put this solution on YOUR website!
I hope this helps:
(3X + 2)(3X-2)
If you mutiply it out it comes to:
9X^2 -6X +6X -4
Your -6X +6X cancel each other out.
you will end up with:
9X^2 -4
I don't mean to confuse you, but I look at it as your 9 and 4 are perfect squares. 3^2 and 2^2. If you break it down you will come back the the original equation.
(3X + 2) (3X-2)
I hope this helps

Answer by scoop(27) About Me  (Show Source):
You can put this solution on YOUR website!
(3x+2)(3x-2)
Foil
3x*3x , then 3x*-2 then 2*3x, then 2*-2 giving you
9x^2-6x+6x-4 combine
9x^2-4