Question

Qual polinômio iremos obter ao multiplicar P por Q , sendo P = 3x² - 5x + 8 e Q = - 2x + 1?

Answer 1

Oie, Td Bom?!

$=P \: . \: Q$

$= (3x {}^{2} - 5x + 8) \: . \: ( - 2x + 1)$

$= 3x {}^{2} \: . \: ( - 2x + 1) - 5x \: . \: ( - 2x + 1) + 8( - 2x + 1)$

$= - 6x {}^{3} + 3x {}^{2} + 10x {}^{2} - 5x - 16x + 8$

$= - 6x {}^{3} + 13x {}^{2} - 21x + 8$

Att. Makaveli1996