Let f(x)= x^2+1 and g(x)+x=3. Find the Following: (f+g)(x)

Question

Im so stuck on this. Much help appreciated

Answer 1

f(x) = x^2 +1, g(x)+x = 3, g(x) = 3-x

find (f+g)(x) =f(x)+g(x) = x^2+1 + 3-x = x^2 -x +4

(f+g)(x) = x^2-x+4