$\lim_{x\to-3}\left(x+5\right)$
$3x>217$
$\left(x-1\right)^2-4\left(x-1\right)-5$
$2\left(8a-b\right)-7\left(7b-4a\right)$
$x^2y^2+xy^3$
$x^2-14xy+49y^2$
$\int\frac{2}{x^2\sqrt{\left(x^2-1\right)}}dx$
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