$$\left. \begin{array} { l } { 1.9 4 n ^ { 2 } - 12 n y ^ { 2 } + 30 n + 30 0.00 n } \\ { 2 y } \\ { \frac { 2 v a } { y } 3 } \end{array} \right.$$
$n\left(-12y^{2}+\frac{97n}{50}+330\right),\ 2y,\ \frac{6av}{y}$
