$$\left. \begin{array} { l } { 6 x ^ { 2 } - 7 x y + 3 y ^ { 2 } } \\ { x ^ { 2 } + 4 x y - 2 y ^ { 2 } } \end{array} \right.$$
$37\left(xy\right)^{2}-17yx^{3}+6y^{4}-26xy^{3}-6x^{4}$
$$-6x^{4}+37x^{2}y^{2}-26xy^{3}+6y^{4}-17yx^{3}$$
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$6x^{2}-7xy+3y^{2},\ x^{2}+4xy-2y^{2}$
