Respuesta :
A B + C = ( x + 1 ) ( x² + 2 x - 1 ) + 2 x =
= x³ + 2 x² - x + x² + 2 x - 1 + 2 x = x³ + 3 x² + 3 x - 1
Answer: C)
= x³ + 2 x² - x + x² + 2 x - 1 + 2 x = x³ + 3 x² + 3 x - 1
Answer: C)