Learning functions, need help with some word problems.
(f+g)(x) = f(x) + g(x)
(f+g)(x) = -6*x - 1 + 4*x^2
(f+g)(x) =4x^2 - 6x -1
if you mean (f o g)(x)
if so
( f o g)(x) = f (g(x))
( f o g)(x) = f (4x^2)*******[g(x) = 4*x^2, so i just substitute it]
f(x)= -6x-1 , now just substitute the value of x with 4x^2
f(4x^2)= -6*(4x^2)-1
f(4x^2)= -24x^2-1
( f o g)(x) = -24x^2-1