Question

1. Determine which of the following polynomials has (x + 1) a factor :
(i) r + x2 + x + 1​

Answer 1

r=3

Step-by-step explanation:

let x= -1

r+(-1)(2)+(-1)+1=0

r-2-1+1=0

r-2-1=0

r-3=0

3=r