Question Number 120285 by Bird last updated on 30/Oct/20
$${calculate}\:\:\int_{\mathrm{2}} ^{\infty} \:\frac{{dx}}{\left({x}^{\mathrm{2}} −\mathrm{1}\right)^{\mathrm{2}} \left({x}^{\mathrm{2}} +{x}+\mathrm{1}\right)} \\ $$
calculate-2-dx-x-2-1-2-x-2-x-1-