Question

8. Efetue a multiplicação 2x. (x² - 5x + 6) - 3x.( x² + 2x -1)

Answer 1

Oie, Td Bom?!

$= 2x \: . \: ( x{}^{2} - 5x + 6) - 3x \: . \: (x {}^{2} + 2x - 1)$

$= 2x {}^{3} - 10x {}^{2} + 12x - 3x {}^{3} - 6x {}^{2} + 3x$

$= - x {}^{3} - 16x {}^{2} + 15x$

Att. Makaveli1996