Question

Выполните действия a)4x^2(x^3-1) b)(a+8)(a-4)

Answer 1

$a)4 {x}^{6} - 4 {x}^{2} \\ b) {a}^{2} - 4a + 8a - 32 = \\ {a}^{2} + 4a - 32$

Answer 2

а)
$4 {x}^{2}( {x}^{3} - 1) = 4 {x}^{2 \times 3} - 4 {x}^{2} = 4 {x}^{6} - 4 {x}^{2}$
б)
$(a + 8)(a - 4) = {a}^{2} - 4a + 8a - 32 = {a}^{2} + 4a - 32$