Find the Curl Of $2 x ^ { 2 } z \mathbf { i } + 0 \mathbf { j } + 9 x z ^ { 2 } \mathbf { k }$

Find the curl of $2 x ^ { 2 } z \mathbf { i } + 0 \mathbf { j } + 9 x z ^ { 2 } \mathbf { k }$ .