below

$\frac{x}{x^2-4}+\frac{3}{x+2}=\frac{x}{x-2}$

$x^2-x+4=0$

$x^2-2x-6=0$

$x^2+x+4=0$

$x^2-2x+6=0$

$x^2+2x+6=0$

$x^2+x-4=0$