The Derivative Of $\frac { \left( z ^ { 2 } + 1 \right) ^ { 2 } } { z }$

True/False

The derivative of $\frac { \left( z ^ { 2 } + 1 \right) ^ { 2 } } { z }$ is $3 z ^ { 2 } + 2 - \frac { 1 } { z ^ { 2 } }$ .