$\lim_{x\to0}\left(\frac{senxlnx}{cosx}\right)$
$\int x^2e^{2x\:}dx$
$\int\frac{x^3+x^2-1}{x^3+x}dx$
$\left(20x-10y+5z\right)^2$
$-11\:-\:\left(-41\right)$
$\left(x+8\right)=0$
$6\left(2p\right)$
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