$6sinxcosx-2$
$-5-64x$
$\lim_{x\to0}\left(\frac{x^3-27}{x}\right)$
$x^5-x^4+x$
$\int\sec^2\left(3x+2\right)\:dx$
$3m^4-48$
$\int\frac{3}{x\left(x+2\right)^2}dx$
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