$\lim_{x\to\infty}\left(5-\frac{2}{x^2}\right)$
$4z^2+28z+49$
$\lim_{x\to8}\left(x^2+x\right)-\left(8x\right)$
$\left(15xy-3x^2-4y^2\right)\:-\left(3x^2-4y^2\right)$
$\int\left(1+\cot\left(2x\right)\right)^2dx$
$5x^2+2x^5+5x^2+3$
$x^{3\:}+y^3\:=\:7$
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