Question

Calculando o binômio (X + 5 ) (X - 6) é igual a ; x² + x + 30 x² + x – 30 x² - x + 30 x² - x – 30

Answer 1

Oie, Td Bom?!

$= (x + 5) \: . \: (x - 6)$

$= x \: . \: (x - 6) + 5(x - 6)$

$= x {}^{2} - 6x + 5x - 30$

$= x {}^{2} - x - 30$

Att. Makaveli1996