Find (f + g)(x) and its domain.

The domain of function( f+ g)(x) ( (-∞,∞))

Step-by-step explanation:

Given  ( f + g)x = f(x) +g(x)

The domain of function (f + g)(x)  is (-∞,∞)

Example:-

f(x) = 2 x² + 3x and  g(x) =  4x² +3

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

             =  2 x² + 3x + 4 x² + 3

            =  6x ² + 3 x + 3

The domain of  (f + g) (x)  is ( -∞,∞))

what is the rest of the question? ?