Respuesta :

Answer:

  (f+g)(x) = 5x^2 -4

Step-by-step explanation:

  [tex](f+g)(x)=f(x)+g(x)\\\\=(4x^2+1)+(x^2-5)=(4+1)x^2+(1-5)\\\\\boxed{(f+g)(x)=5x^2-4}[/tex]