$\frac{x}{x^2+11x+30}$
$\left(y^3-x\right)y'=y$
$\cot^2x=\csc^2x$
$\frac{x-\frac{x^2}{x-1}}{x+\frac{x^2-1}{1+\frac{1}{x}}}$
$\lim_{x\to\infty}\left(\frac{\sqrt[10]{x}}{\ln\left(x\right)}\right)$
$\frac{d}{dx}ax^2+2hxy+by^2=1$
$144m^2-72mp+9p^2$
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