$\frac{8^4}{2^4}$
$a^3+\frac{1}{a^3}$
$\lim_{x\to0}\left(\frac{sen\:x}{x^2}\right)$
$2\tan\left(x\right)\frac{\left(1+\cos\left(x\right)\right)}{2}=\sin\left(x\right)+\tan\left(x\right)$
$\frac { n } { n }$
$\left(0-1\right)^2-5$
$16x^4y^2+56x^3y+49x^2$
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