Question

Which expression is equal to (f + g) (x)?

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


a x^2 + x + 2

b x ^3-3

c x^3-x^2 + 3x -3

d x^2 -2x +4

Answer 1

A

Explanation:

(f+g)(x) means to do f(x)+g(x). We will add both functions together.

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

Answer a