F(x) = x + 2

Mathematics

1 answer:

kow [346]3 years ago

6 0

Answer:

(fg)(x) = x^2 -2x -8

Step-by-step explanation:

(fg)(x) = f(x)·g(x) = (x +2)(x -4)

= x(x -4) +2(x -4) = x^2 -4x +2x -8

= x^2 -2x -8 . . . . matches the 3rd choice

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