Question

Срочно !Алгебра!°!!!!​

Answer 1

$3x( {x}^{2} - 8) - 3 {x}^{3} = 12 \\ 3 {x}^{3} - 24x - 3 {x}^{3} = 12 \\ - 24x = 12 \\ x = 12 \div ( - 24) \\ x = - \frac{1}{2}$