Question

Sendo A= 3x² - 1 e B= x³ - x+1, calcule a) A+B b) A-B c)-B​

Answer 1

Resposta:

a)A+B=

$3x{}^{2} -1+x{}^{3}-x+1$

$x {}^{3}+ 3x {}^{2} - x$

b)A-B

$3x {}^{2} - 1 - x {}^{3} - x + 1$

$- x {}^{3} + 3x {}^{2} - x$