$\tan\left(20\pi^4+\frac{\pi}{4}\right)$
$\int\frac{4}{\left(u^2+3\right)^2}dx$
$\left(\frac{-3a^2}{b}\right)^{-5}$
$\left(9\cdot10^2\right)\left(2\cdot10^{10}\right)$
$\frac{2x^2-8}{3x-2\sqrt{1-4x}}$
$-\left[-\left(-2\right)+10\right]\:$
$16b^2-2b+36$
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