Question

4) Escreva na forma reduzida: 2x³ + ( x² + 4x² + 3x - 2 ) - ( 5x³ + 2x ²+ 3x² - 8 ) – (x³ - 2x² - 4x – x ) = *

Answer 1

2x³ + ( x² + 4x² + 3x - 2 ) - ( 5x³ + 2x ²+ 3x² - 8 ) – (x³ - 2x² - 4x – x )

solução

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

Answer 2

Oie, Td Bom?!

$=2 x {}^{3} + (x {}^{2} + 4x {}^{2} + 3x - 2) - (5x {}^{3} + 2x {}^{2} + 3x {}^{2} - 8) - ( x{}^{3} - 2x {}^{2} - 4x - x)$

$= 2x {}^{3} + (5x {}^{2} + 3x - 2) - (5x {}^{3} + 5x {}^{2} - 8) - (x {}^{3} - 2x {}^{2} - 5x)$

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

$= - 4x {}^{3} + 8x + 6 + 2x {}^{2}$

$= - 4x {}^{3} + 2x {}^{2} + 8x + 6$

Att. Makaveli1996