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f = ∛x²; g = (x-4)/(x+4)
fog = f(g) = ∛g² = ∛[(x-4)/(x+4)²] (figura solamente en la última opción)
Verificamos gof = g(f) = (f-4)/(f+4) = [(∛x²-4)/(∛x²+4)]
Verificado. Respuesta: opción 5
Saludos Herminio