Respuesta :

cad311
distribution property
6p^3 + 8p^2 + 6p + 21p^2 + 28p - 21
=6p^3+29p^2+34p-21
last option

Answer:

C

Step-by-step explanation:

6p3 + 8p2 - 6p + 21p2 +28p -21

6p3 + 29p2 + 22p - 21