$\log\left(x\right)+\log\left(x-1\right)=1+\log\left(2\right)$
$\left(x+5\right)x+5$
$7x+2=16$
$tan\frac{x}{2}=-\frac{\sqrt{3}}{3}$
$20+2\cdot43$
$\left(\:a^6+\:a^{-6}\:\right)^3$
$\int xe^{-3e}dx$
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