$-13\:+\:\left(11\right)\:+\:16\:+\:\left(-27\right)\:+\:\left(-7\right)-\:21\:+\left(43\right)\:+35\:+\:\left(-40\right)+\:7\:-\:\left(-21\right)$
$3a^3+6m^3$
$1\:\frac{1}{7}\:x\:9\:\frac{1}{3}$
$x^2-2+6$
$csc\left(x\right)=3$
$\lim_{x\to0}\left(\frac{\sqrt{1-\cos\left(2x\right)}}{\sqrt{2}x}\right)$
$\frac{d^2}{dx^2}\left(\sqrt{1-y^2}\right)$
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