$\lim_{x\to0}\left(\frac{1-sin\left(2x\right)}{cos\left(2x\right)}\right)$
$\frac{r^2s^{-3}}{3s^2}\cdot\frac{s^2}{x^{-4}}$
$\left(5x+12b\right)^2$
$1+q^9$
$-5+\left(-2\cdot3+4\right)$
$3\left(m+n\right)^3$
$2\cdot4096$
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