$\int\frac{t}{\left(4-t^2\right)^{\frac{3}{2}}}dt$
$\lim_{x\to-\infty}\left(\frac{cosx}{x}-2\right)$
$\left(p\:-\:q\right)\:\left(p\:+q\right)=p^2-q^2$
$\lim_{x\to0}\left(\frac{e^x-1}{e^{2x-1}}\right)$
$\left(32\right)-\left(-18\right)$
$6\sqrt{2}\cos\left(x\right)+1=7$
$\lim_{x\to\infty}\left(\frac{\sqrt{x^2+3}}{x^2}\right)$
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