\(6x\left(x^2-2\right)-\left(2-x^2\right)=0\)
\(\Rightarrow6x\left(x^2-2\right)+\left(x^2-2\right)=0\)
\(\Rightarrow\left(x^2-2\right)\left(6x+1\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x^2-2=0\\6x+1=0\end{matrix}\right.\)
\(\Rightarrow\left[{}\begin{matrix}x^2=2\\6x=-1\end{matrix}\right.\)
\(\Rightarrow\left[{}\begin{matrix}x=\pm\sqrt{2}\\x=-\frac{1}{6}\end{matrix}\right.\)
P/s: Ko chắc!