How do you FOIL $(3x - 4) (3x + 2)$ ?

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Answer 1 · 2015-05-26T13:58:23

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${: ("First", 3x xx 3x, " = ", 9x^2), ("Outside", 3x xx 2, " = ", 6x), ("Inside", (-4)xx3x, " = ", -12x), ("Last", (-4) xx2, " = ", -8) :}$

$= 9x^2-6x-8$

How do you FOIL (3x - 4) (3x + 2)(3x - 4) (3x + 2)?