Question

Which of the following are the the real number solution(s) to the polynomial function
f(x) = x^3 – 4x^2 + x + 6?

A. x = –3, x = –1, x = 2

B. x = 3, x = 1, x = –2

C. x = 3, x = –1, x = 2

D. x = –3, x = 1, x = –2

Answer 1

check each one out by plugging in the values
it looks like x=2 , x=3
or x=-2, x=-3 are likely because of +6 at the end of f(x)

Answer 2

so try C and D

Answer 3

i fancy its C
plug in x=3, then x=-1 then x=2
and see if they all fit