$${ \left(a+b-c \right) }^{ 3 }$$
$a^{3}+3ab^{2}-6abc+3ac^{2}+b^{3}+3ba^{2}+3bc^{2}-c^{3}-3ca^{2}-3cb^{2}$
$\left(a+b-c\right)^{3}$
