$\lim_{x\to0}\left(3x^3+x^2-x\right)$
$5n^2-5=0$
$2+-90$
$34.8-0.467$
$-10-4+33+9-233$
$24y^2-48xy-18x^2$
$\int\frac{5x-4}{\left(x-1\right)^2\left(x+1\right)}dx$
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