$\lim_{x\to0}\left(\frac{e^{2t}-2t-1}{1-cost}\right)$
$\frac{\pi32}{\pi4}$
$\left(a^3\right)^6=\left(a^2\right)^x$
$\left(7x\:+\:2\right)\left(4\:-\:3x\right)$
$\left(-38\right)\left(-25\right)$
$\frac{1}{25-sin^2x}$
$x-2-x$
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