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