If the real roots of the equation 3 x to the 4th power minus 6 x cubed plus 3 x squared minus 54 x minus 216 is equal to 0 are negative 2 and 4 , what are the nonreal roots?
Answer
A
negative 9 i comma 9 i
B
negative 3 i comma 3 i
C
negative 6 i square root of 6 comma 6 i square root of 6
D
negative 3 i square root of 3 comma 3 i square root of 3