Question

For f(x)=2x+1 and g(x) =x2-7, find (f*g)(x)

Answer 1

Answer:

  (f×g)(x) = 2x³ +x² -14x -7

Step-by-step explanation:

(f×g)(x) = f(x)×g(x) = (2x +1)×(x² -7)

  = 2x(x² -7) +1(x² -7)

  = 2x³ -14x +x² -7

(f×g)(x) = 2x³ +x² -14x -7