$\sqrt{x}^2+x-3$
$-6+2-\left(-9+2\right)+\left(-2-\left(-3+8\right)-6\right)$
$-\left(3x+3y\right)^3$
$-1-\left[7-10\right]+5$
$-\left(487+321\right)+111$
$\int\frac{1}{\left(5x+7\right)^3}dx$
$\lim_{x\to1}\left(\frac{2x\:+\:3}{x^2\:-1}\right)$
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