Answer:
Explanation:
Prime numbers have only one factor pair, the number itself and 1. Some polynomials can be factored and some cannot be so a polynomial is a prime polynomial if it can't be factored into the standard linear form of (x+a)((x+b).
For the given polynomial x^3+3x^2+2x+6
Re-arranging the Polynomial to find out whether it could be factored or not
x^3+2x+3x^2+6=0
x(x^2+2) +3 (x^2+2)=0
(x+3)(x^2+2)=0
x+3=0 and x^2+2=0
x=-3, x^2= -2
x=-3, x=sqrt(-2), x= -sqrt(-2)
As the polynomial is factorable it is not prime