Question

If f(x)=x/4 -3 and g(x)= 4x^2 +2x-4, find (f+g)(x).

Answer 1

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

Therefore,

$\frac{x}{4} - 3 + {4x}^{2} + 2x - 4 \\ 4 {x}^{2} + ( \frac{x}{4} + \frac{8x}{4} ) - 7 \\ 4 {x}^{2} + \frac{9x}{4} - 7$

Therefore, the answer is B.