$19+0,84+7$
$-x^2+x\:.\:m$
$\lim_{x\to\infty}\left(x^2+x\right)e^{-x}$
$24uv^3x^6-30v^5v^5$
$-2+3\:350$
$\left(3xyv-ab\right)\left(3xyv+4ab\right)$
$\int z\left(2+2\sqrt{z}\right)dz$
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