$\sec^2x-1=\tan^2x$
$1+13$
$\lim_{z\to\infty}\left(ze^z\right)$
$x^{4}-11^{3}+44^{2}-76x+48$
$\left(\sqrt{-3h^2}-15\sqrt{3}\right)^2$
$\int4x^4e^{2t^5}dx$
$x^2-x=-6x+6$
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