Question

(-5x^3+7x-1)+(5x2+9x-7)​

Answer 1

Oie, Td Bom?!

$( - 5x {}^{3} + 7x - 1) + (5x {}^{2} + 9x - 7)$

$- 5x {}^{3} + 7x - 1 + 5x {}^{2} + 9x - 7$

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

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

Att. Makaveli1996