Question

помогите
(4a+b)³(5b-7a)³

Answer 1

${(4a + b)}^{3} {(5b - 7a)}^{3} =$
${((4a + b)(5b - 7a))}^{3} =$
${(20ab - 28 {a}^{2} + 5 {b}^{2} - 7ab )}^{3} =$
${(5 {b}^{2} + 13ab - 28 {a}^{2} )}^{3}$