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2 April, 06:21

F (x) = 3x; g (x) = 4x^2 + 1

Which expression is equal to (fog) (x) ?

a 4x^2 + 3x - 1

b 12x^3 + 3x

c 36^2 + 1

d 12x^2 + 3

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  1. 2 April, 06:56
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    Answer: d 12x^3 + 3

    Step-by-step explanation:

    This is a composite function. Just insert g (x) into the x of f (x)

    f (x) = 3x

    3 (4x^2 + 1)

    Distribute the three

    3 (4x^2 + 1)

    12x^3 + 3
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