$\frac{x}{x^2-x-2}$
$\sec\left(x\right)-\frac{\tan\left(x\right)}{\csc\left(x\right)}$
$01+01-001$
$\frac{dy}{dx}=\frac{2\cdot y}{x}+x$
$\left(2\right)\left(29\right)$
$-2\left(-1\right)+4\left(-2\right)+3\left(2\right)$
$3m^7-2f^5+a+-4f^5-a-3a-9m^8$
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