$-y'+\frac{y}{x}=x$
$\sqrt[3]{2197}$
$\lim\:_{x\to\:0}\frac{\left(e^{2x}-1\right)}{tanx}$
$4x^2-20x+9$
$\left(6c-2\right)\left(9c-8\right)$
$2a^2+10ab-2a$
$\int\cos\left(4x\right)\cdot e^{-x}dx$
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