$$9 { m }^{ 2 } { n }^{ 2 } -27mn+63=$$
$9\left(m^{2}n^{2}-3mn+7\right)$
$$9\left(m^{2}n^{2}-3mn+7\right)$$
Show Solution
Hide Solution
$9\left(7+\left(mn\right)^{2}-3mn\right)$
