$$\left. \begin{array} { l } { m - n } \\ { n - m } \\ { m + m } \\ { n + m } \end{array} \right.$$
$-2m\left(m^{2}-n^{2}\right)$
$$2m\left(n-m\right)\left(m+n\right)$$
$$-2m^{3}+2mn^{2}$$
Show Solution
Hide Solution
$m-n,\ n-m,\ 2m,\ m+n$
