Respuesta :

HomertheGenius
( x + 1 ) * ( x  5 ) * ( x - 7 ) =
= ( x² - 5 x + x - 5 ) * ( x - 7 ) =
= ( x² - 4 x - 5 ) * ( x - 7 ) =
= x³ - 7 x² - 4 x² + 28 x - 5 x + 35 
Answer:
P ( x ) = x³ - 11 x² + 23 x + 35