Question

If f(x) = 3 -3 and g(x) = 3x2 + x – 6, find (f + g)(x).

O A. 4x2 - 9
O B. 3x-2x-3
O O c. 3x²
3x2 + 2x-3
O D. 3x2+2x-9

Answer 1

D

Explanation:

note that (f + g)(x) = f(x) + g(x) , thus

f(x) + g(x)

=
`(x)/(2)` - 3 + 3x² + x - 6 ← collect like terms

= 3x² +
`(3)/(2)` x - 9 → D