Question

factorise the given photo

Answer 1

$8 {a}^{3} - {b}^{3} + 12 {a}^{2} b - 6a {b}^{2} \\ (2a - b)( {a }^{2} + ab + {b}^{2} ) + 6ab(2a - b) \\ (2a - b)( {a}^{2} + {b}^{2} + 7ab)$