ĐKXĐ: \(x\ne\pm2\)
\(\frac{3}{x-2}-\frac{4}{x+2}=\frac{2x^2-4}{x^2-4}\)
\(\Leftrightarrow\frac{3\left(x+2\right)}{x^2-4}-\frac{4\left(x-2\right)}{x^2-4}=\frac{2x^2-4}{x^2-4}\)
\(\Leftrightarrow3x+6-4x+8=2x^2-4\)
\(\Leftrightarrow2x^2+x-18=0\)
\(\Rightarrow\left[{}\begin{matrix}x=\frac{-1-\sqrt{145}}{4}\\x=\frac{-1+\sqrt{145}}{4}\end{matrix}\right.\)