Respuesta :

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Answer:

D. (f · g)(x) = 3x³ + 6x²

Step-by-step explanation:

(f · g)(x) = f(x) · g(x)

We have f(x) = 3x² and g(x) = x + 2. Substitute:

(f · g)(x) = (3x²) · (x + 2)              use the distributive property

(f · g)(x) = (3x²)(x) + (3x²)(2)

(f · g)(x) = 3x³ + 6x²

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