Question

F(x)=x - 1 and ​g(x)=x^2−x. Find and simplify the expression.
​(f+​g)(3​)

Answer 1

8

Explanation:

(f+g)(x) = (f)(x)+g(x)

= x - 1 + x^2 - x

= x^2 - 1

(f+g)(3) = (f)(3)+g(3)

= 2 + 6

= 8