$\int \frac{x^{2}}{x^{2}-4} d x=$ কত ?

$\ell n\left|\frac{x-2}{x+2}\right|+c$

$\ell n \left|\frac{x+2}{x-2}\right|-5 x+c$

$x+\ell n \left|\frac{x-2}{x+2}\right|+c$

$2 x+\ell n\left|\frac{x+2}{x-2}\right|+c$