$\lim_{x\to0}\left(x^2+\frac{1}{x^2}\right)$
$\lim_{n\to\infty}\left(1-\frac{2n}{n+2}\right)$
$\int3t\left(t^2+3\right)^2dx$
$7\sin^2x\:+\:2\sin x=\:0$
$22x+6+2x$
$\lim_{x\to-\infty}\left(\frac{\sqrt{4x^6-x}}{x^3\:+\:8\:}\right)$
$\sqrt[3]{3^6}$
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