how do you calculate -4 squared - (-4) squared - 4 squared
$$-4^{2}-(-4)^{2}-4^{2}$$= ?????????
$$-4^{2}-(-4)^{2}-4^{2}=\small{\text{ ????????? }}$$
$$\\= -16-(16) - 16 \\= -16-16-16 \\= - 48$$