If f (x) = 2x^2 + 1 and g (x) = x^2 - 7, find (f+g) (x)

A. 3x^2 + 8

B. 3x^2 - 6

C. x^2 - 6

D. x^2 + 8

Option B is the answer

(f + g) (x) means f (x) + g (x)

So, you just input the function of f (x) and g (x) altogether, then simplify it.

(f + g) (x)

= f (x) + g (x)

= 2x² + 1 + x² - 7

= 2x² + x² + 1 - 7

= 3x² - 6

The answer is b