Question

plz tell me fast plz
plz tell 1​

Answer 1

Answer:

x³ -2x²+2x

Step-by-step explanation:

1. x³ - 2x² - 9 + 5x³ + 2x + 9 = 5x³ + x³-2x² +2x +9 -9

= x³ -2x²+2x

Answer 2

Step-by-step explanation:

Given polynomials are:x³-2x²-9 and5x³+2x+9

on adding them

(x³-2x²-9)+(5x³+2x+9)

=>(x³+5x³)+(-2x²)+(2x)+(-9+9)

=>(1+5)x³-2x²+2x+0

=>6x³-2x²+2x