If $f ( x ) = \frac { 4 - 5 x ^ { 2 } } { x ^ { 3 } + 6 x - 5 }$

Short Answer

If $f ( x ) = \frac { 4 - 5 x ^ { 2 } } { x ^ { 3 } + 6 x - 5 }$ , what is $f ^ { \prime } ( x )$ ?