Find the Zeros of the Polynomial Function $$f ( x ) = x ^ { 3 } + 5 x ^ { 2 } - 9 x - 45$$

Multiple Choice

Find the zeros of the polynomial function.
- $$f ( x ) = x ^ { 3 } + 5 x ^ { 2 } - 9 x - 45$$

A) $x = - 5 , x = - 3 , x = 3$
B) $x = 5 , x = - 3 , x = 3$
C) $x = - 3 , x = 3$
D) $x = - 5 , x = 9$