Question

Add the given polynomials:
x³- 2x² -9; 5x³ + 2x + 9​

Answer 1

Answer:

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

Step-by-step explanation:

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

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

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

will be the right answer..