Question

find the answer please​

Answer 1

$\large{ \red { \boxed{ \bf \purple{{ - 7x}^{3} + {11x}^{2} + 3x + 8}}}}$

Step-by-step explanation:

Add x³ + 5x² + 3x to 6x² - 8x³ + 8

=> (x³ + 5x² + 3x) + (6x² - 8x³ + 8)

=> x³ + 5x² + 3x + 6x² - 8x³ + 8

=> x³ - 8x³ + 5x² + 6x² + 3x + 8

=> (1-8)x³ + (5+6)x² + 3x + 8

=> -7x³ + 11x² + 3x + 8

So,

The addition is -7x³ + 11x² + 3x + 8.

Hope it helps.