$\frac{r^2s^3t^4}{r^2s^4t^{-4}}$
$\lim_{x\to0}\left(\frac{1-e^{y^2}}{2y^2}\right)$
$\sin^2\left(x\right)+5\cos\left(x\right)+5$
$10xz+4y$
$\sqrt{5+2}$
$7-4xy=7x-4y$
$\int\left(\frac{sin\left(x^2\right)-120cos\left(x\right)+120}{x}\right)dx$
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