Respuesta :

Answer:

 -3x3 + 4x2 - 2x - 3

Step-by-step explanation:

Answer:HEYYAA

Step-by-step explanation:4x^2-2x-1-(-3x^3+2)

so as to opent the bracket the signs should be changed

so it becomes......4x^2-2x-1+3x^3-2...........=+3x^3+4x^2-2x-3 i sthe answer