Question

помогите раскрыть скобки

Answer 1

${a}^{3} + 4 {a}^{2} + 4a + 2 {a}^{2} + 8a + 8$

a3-6a2+12a-8

Answer 2

(а-2)³=(а-2)(а-2)²=(а-2)(а²-4а+2²)=

а*(а²-4а+2²)-2*(а²-4а+2²)=а³-4а²+4а-2а²+8а-8=а³-6а²+12а-8