$4x^2+4y^2-12x+16y-5=0$
$\frac{\csc^2x}{\cot x}$
$( x + 8 ) ( x - 3 )$
$9ab12-9ab$
$m+n+3m$
$\left(\tan\left(a\right)+\tan\left(b\right)\right)\left(1-\tan\left(a\right)\tan\left(b\right)\right)$
$\int\frac{1}{x\sqrt{100x^2+16}}dx$
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