Question

Сторона куба:а=2х-3 Найти S=6a^2 : V=a^3-?

Answer 1

Ответ:

$a = 2x - 3 \\ s = 6 {a}^{2} = 6 {(2x - 3)}^{2} = \\ 6(4 {x}^{2} - 12x + 9) = \\ 24 {x}^{2} - 72x + 54 \\ v = {a}^{3} = {(2x - 3)}^{3} = \\ 8 {x}^{3} - 36 {x}^{2} + 54x - 27$