Question

3- Dê a forma reduzida dos polinômios abaixo:
a) (2x²-9x+2)+(3x²+7x-1)
b)(5x²-4x+7)-(3x²+7x-1)​

Answer 1

Oie, Td Bom?!

a)

$= (2x {}^{2} - 9x + 2) + (3x {}^{2} + 7x - 1)$

$= 2x {}^{2} - 9x + 2 + 3x {}^{2} + 7x - 1$

$= 5x {}^{2} - 9x + 2 + 7x - 1$

$= 5x {}^{2} - 2x + 2 - 1$

$= 5x {}^{2} - 2x + 1$

b)

$= (5x {}^{2} - 4x + 7) - (3x {}^{2} + 7x - 1)$

$= 5x {}^{2} - 4x + 7 - 3x {}^{2} - 7x + 1$

$= 2x {}^{2} - 4x + 7 - 7x + 1$

$= 2x {}^{2} - 11x + 7 + 1$

$= 2x {}^{2} - 11x + 8$

Att. Makaveli1996