Respuesta :

Answer:

4x² - 6x + 2

Step-by-step explanation:

Adding the like terms, that is

x³(2 + 1 - 3) + x²(-4 + 6 + 2) + x(6 - 8 - 4) + (- 3 + 12 - 7)

= 0 + 4x² - 6x + 2