$\csc^260-\tan^230$
$x^2-14x+40$
$35u^2y^2+49$
$\lim_{x\to\infty}\left(\frac{2x+1}{\sqrt{x^2-3x+2}}\right)$
$\left(11a^2b^3+3ab\right)^2$
$-\frac{2x}{2}$
$\:|-\left(7\:x\:42\right)|$
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