Respuesta :

9514 1404 393

Answer:

  (f•g)(x) = 3x^3 +6x^2 -5x -10

Step-by-step explanation:

  (f•g)(x) = f(x)•g(x) = (x +2)(3x^2 -5)

  = x(3x^2 -5) +2(3x^2 -5) . . . . . . . . use the distributive property

  = 3x^3 -5x +6x^2 -10 . . . . . . . and again

  (f•g)(x) = 3x^3 +6x^2 -5x -10 . . . . put in standard form