Respuesta :

carlosego
We have the following expression:
 (x - 3) (x2 + 3x + 9)
 Rewriting we have:
 (x3 + 3x2 + 9x) + (-3x2 - 9x - 27)
 Adding similar terms we have:
 x3 + x2 (3-3) + x (9-9) - 27
 x3 - 27
 Answer:
 The simplified expression is:
 A) x3 - 27