Question

which of the following is a root of the polynomial shown below f(x)=x^3+2x^2-x-2? A.) 2 B.) 1 C.) 3 D.) 0

Answer 1

if the choice is a root then f(choice) = 0
meaning if example 6 is a root then f(6) = 0

Answer 2

so its D?

Answer 3

it was B ;(

Answer 4

yes

Answer 5

I think it's called the Remainder Theorem