Question

(a+b+c)^2 - (a-b-c)^2​

Answer 1

$> {( a + b + c)}^{2} - {(a -b - c) }^{2} \\ \\ > {a}^{2} + {b}^{2} + {c}^{2} + 2ab + 2ac + 2bc - {a}^{2} - {b}^{2} - {c}^{2} + 2ab - 2bc + 2ac \\ \\ after \: cutting \: we \: get \\ \\ > 2ab + 2ac + 2ab + 2ac \\ \\ > 4ab + 4ac$

So answer is

4ab + 4ac