4 5 6 7 Suppose that the functions f and g are defined for all real numbers x as follows. f (x) =x-3 g (x) = 3x2 Write the expressions for (f+g) (x) and (f.g) (x) and evaluate (f-g) (2). ( f+ 8) (x ) = 1 ( f.8) (x) = 0 X ? (f - 8) (2 ) = 0