Question

Which of the following is a root of the polynomial shown below?

f(x)=x^3-4x^2-11x+30

A. 6
B. 0
C. 1
D. -3

Answer 1

B.1

Explanation:

apexs

Answer 2

So if we go like this:
f(0)=30
f(1)=16
f(6)=36
the answer is D.-3. because
f(-3)=-27-36+33+30=0
I hope this can help you a lot