$\int60csc^2xdx$
$\lim_{x\to2}\left(\frac{x^3+2x^2-5x-6}{x^3-5x^2+8x-4}\right)$
$2p^2q\:y\:3pq^2$
$\left(y-3\right)\left(y+3\right)$
$\left(x^2-3\right)\left(3-x^2\right)$
$\csc^{2}x-\cot^{2}x$
$14a^4b^2+28a^3b^2+21a^2b$
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