$\int\left(cosx+cos^3x\right)dx$
$\lim_{x\to\infty}\left(\frac{\sqrt{x+3x^2}}{5x-1}\right)$
$\lim_{x\to\infty}\left(\frac{-\sqrt{x^2+4}-\left|x\right|}{x-\sqrt{1-x^3}}\right)$
$\frac{s}{\left(s^2+4\right)\left(s^2+1\right)}$
$\left(q^2+3q+2\right)\left(\sqrt{9q^2-4}+\sqrt{17+12q}\right)$
$xy-yz+4xz;\:x=-2;\:y=3;\:z=-5$
$3x^2+2\sqrt{3x}\sqrt{10i}-10$
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