Answer:
[tex] x = - \sqrt{2}, \: \: x = \sqrt{2} [/tex]
Step-by-step explanation:
[tex]6x^2 - 12 = 4x^2-8 \\ \\ 6 {x}^{2} - 4 {x}^{2} = 12 - 8 \\ \\ 2 {x}^{2} = 4 \\ \\ {x}^{2} = \frac{4}{2} \\ \\ {x}^{2} = 2 \\ \\ x = \pm \sqrt{2} \\ \\ x = - \sqrt{2}, \: \: x = \sqrt{2} [/tex]
