Question Number 91269 by mathmax by abdo last updated on 29/Apr/20
$${calculate}\:\int_{\mathrm{0}} ^{\infty} \:\:\frac{{x}^{\mathrm{2}} −\mathrm{1}}{\left({x}^{\mathrm{2}} +{x}+\mathrm{2}\right)^{\mathrm{3}} }{dx} \\ $$
calculate-0-x-2-1-x-2-x-2-3-dx-