$xcscy\cdot seny$
$\int\frac{3x+1}{x^2-3x+4}dx$
$\frac{csc}{1+tan}$
$\left(2x^2-3\right)\left(2x^2+7\right)$
$\int_0^ax^2\sqrt{a^2}-x^2\:\:\:dx$
$225x^2+120x+16$
$\lim_{x\to-00}\left(\frac{x^8-52}{x-2}\right)$
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