$\frac{2^2+10^2}{10-2\cdot7}$
$\int\left(\sqrt{x}-3\right)\left(\sqrt{x}+1\right)^{-1}dx$
$\int_{\infty}^{-1}\left(\frac{1}{x^{\frac{1}{3}}}\right)dx$
$2x^2-3x+9=0$
$\frac{x}{5}-4=6$
$3ab\:and\:5a$
$10\:+\:7\:-\:15\:-\:6\:-\:4\:+\:2\:+\:5$
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