Question

Подробно решите, пожалуйста

Answer 1

$x(3 {x}^{2} - 12) \times (8x + 2) = 0\\ \\ x = 0 \\ \\ 3 {x }^{2} - 12 = 0 \\ 3 {x}^{2} = 12 \\ {x}^{2} = 4 \\ x = 2 \\ x = -2 \\ \\ 8x + 2 = 0 \\ 8x = - 2 \\ x = - \frac{1}{4}$