$\int_2^{\infty}\frac{1}{x^2+7x-8}dx$
$\int_{\frac{-\pi}{2}}^{\frac{\pi}{2}}x\sin\left(2nx\right)dx$
$y^2-3y-18$
$2x-7\le6$
$\:\left(5\:-\:x^2\right)^3$
$\int\frac{21}{x^2-9x+8}dx$
$\int\left(\frac{\tan\left(x-2\right)}{3}\right)dx$
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