[tex]12 {x}^{3} - 48x = 0[/tex]

[tex]12x \times ( {x}^{2} - 4) = 0[/tex]

[tex]x \times ( {x}^{2} - 4) = 0[/tex]

[tex]x = 0[/tex]

[tex] {x}^{2} - 4 = 0 [/tex]

[tex]x = 0[/tex]

[tex]x = - 2[/tex]

[tex]x = 2[/tex]

[tex] x_{1} = - 2, x_{2} = 0, x_{3} = 2[/tex]