Question

If f(x)= 15x+7x and g(x)= x^2-5x, find (f+g)(x)

Answer 1

(f+g)(x) = x^2 +10x +7

Explanation:

(f+g)(x) = f(x) +g(x) = (15x +7) +(x^2 -5x)

= x^2 +x(15 -5) +7

= x^2 +10x +7