$$\left. \begin{array} { l } { 2 \quad } \\ { 3 p x - p y + 3 q x - q y } \\ { 3 n x + 2 } \end{array} \right.$$
$2\left(y-3x\right)\left(p+q\right)\left(3nx+2\right)$
$$2\left(y-3x\right)\left(p+q\right)\left(3nx+2\right)$$
$$-18npx^{2}-18nqx^{2}+6npxy+6nqxy-12px-12qx+4py+4qy$$
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$2,\ \left(3x-y\right)\left(p+q\right),\ 3nx+2$
