$\cos\left(x\right)^2+\left(\frac{1}{\sin\left(x\right)}\right)^2$
$25x^6+10x^2+35x$
$a^3-27$
$\lim_{x\to\infty}\left(\frac{\left(x+a\right)}{\left(x-a\right)}\right)^x$
$\frac{dx}{dy}+\frac{x}{y}=e^y$
$\left(-2\right)\:^3$
$\frac{16m^2-n^2}{4m-n}$
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