FOIL method : F = First , O = Outer , I = Inner, L = Last
(6x-6)(x+6)
First: 6x * x = 6x^2
Outer: 6x * 6 = 36x
Inner: -6 * x = -6x
Last: -6 *6 = -36
Put these in order and we get : 6x^2 + 36x -6x -36
Hey there!
[tex] (6x + (-6)) (x +6) \\ \\ 6x(x) + 6x(6) + (-6) (x) + -6 (6) \\ \\ 6x(x) = 6x^2 \\ \\ 6x(6) = 36x \\ \\ -6(6) = -36 \\ \\ 6x^2 + 36x - 6x -36 \\ \\ 36x - 6x = 30x \\ \\ Answer: 6x^2 + 30x -36 [/tex]
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