Question

Which best describes the relationship between (x + 1) and the polynomial -3x3 - 2x2 + 1?

A. (x + 1) is not a factor.
B. It is impossible to tell if (x + 1) is a factor.
C. (x + 1) is a factor.
D. If (x + 1) isn't a factor, then x = -1 could be.

Answer 1

by plugging x=-1 in -3x3 - 2x2 + 1 we have
-3(-1)^3 -2(-1)^2 +1 =3-2+1=2<>0
hence A. (x + 1) is not a factor.