Respuesta :

gzeta002
The third one (f+g)(x)=4x6-2x2-5x+8
ferrybukantoro

Step-by-step explanation:

#5

(f+g) (x) = x³-2x²+1 + 4x³-5x+7

= 5x³-2x²-5x+8 (option D)