Question Number 63823 by mathmax by abdo last updated on 09/Jul/19
$${calculate}\:\:\int_{−\infty} ^{+\infty} \:\:\frac{\mathrm{3}{x}^{\mathrm{2}} −\mathrm{1}}{{x}^{\mathrm{4}} −\mathrm{2}{x}^{\mathrm{2}} \:+\mathrm{3}}{dx} \\ $$
calculate-3x-2-1-x-4-2x-2-3-dx-