$\cos\left(1-x\right)$
$\int\frac{e^{\sqrt{x}}}{\sqrt{x}\left(1+e^{\sqrt{x}}\right)}dx$
$x-9>2$
$\sqrt{-16}\:+\:\sqrt{-64}\:+\:\sqrt{-36}\:$
$f\left(x\right)=\frac{1}{3}x-3$
$-8n\:-7+\:2\:-\:8n$
$\int\:-7x^9dx$
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