Respuesta :

Answer: C, 3x^2 + 6x + 2

Step-by-step explanation:

(3x + 5) + (4x^2 - 2) - (x^2 - 3x + 1)

3x + 5 + 4x^2 - 2 -x^2 + 3x - 1

3x^2 + 6x + 2