Question

x³-2x²-9 ; 5x³+2x+9 Add the given polynomial.

Answer 1

+1x^3+5x^3 = 6x^3, -2x^2+0 = -2x^2, -9+9= 0 , +2x+0= 2x = 6x^3-2x^2+2x

Answer 2

Answer:

2x (3x² - x + 1)

Step-by-step explanation:

x³-2x²-9 ; 5x³+2x+9 Add the given polynomial.

x³ - 2x² - 9

5x³ + 2x + 9

(x³ - 2x² - 9) + (5x³ + 2x + 9)

=  x³ + 5x³  -2x² + 2x - 9 + 9

= 6x³ - 2x² + 2x

= 2x (3x² - x + 1)