Question

(a+2b)^2(a-2b)
Помогите пожалуйста!

Answer 1

(а+2b)^2*(a-2b) = (a^2+4ab+4b^2)*(a-2b) = a^3+2a^2b-4ab^2-8b^3

Answer 2

$(a + 2b {)}^{2} (a - 2b) = \\ ({a}^{2} + 4ab + 4 {b}^{2} ) \times (a - 2b) = \\ {a}^{3} + 2 {a}^{2} b - 4a {b}^{2} - 8 {b}^{2}$