$\int e^x\:\sin\left(2x\right)dx$
$\left(3m^2-5\right)\left(3m^2+5\right)$
$\lim_{x\to+\infty}\sqrt{x+2}-\sqrt{x-2}$
$-x^3+x^2-x+1$
$csc^2\theta\:-cos^2\theta\:\:csc^2\theta\:$
$-3\left(4n-4\right)$
$\left(pq\:+\:4\right)\:\left(pq\:-\:6\right)$
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