$$-7 { x }^{ 2 } y+3x { y }^{ 2 } +5 { x }^{ 2 } y-3xy$$
$xy\left(-2x+3y-3\right)$
$$xy\left(-7x+3y+5x-3\right)$$
$$-2x+3y-3$$
$$xy\left(-2x+3y-3\right)$$
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