$y+x=2x$
$\lim_{x\to0}\left(\frac{x-\arcsin\left(x\right)}{x^5}\right)$
$\int18sec^2\left(u\right)du$
$\left(10-7\right)-\left(-2+6\right)$
$\tan x\cos^2x=2\tan x$
$\int x^2\:e^{\left(2x+1\right)}\:dx$
$9\cdot11$
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