$\frac{8x^{4}+38x^{3}+13x^{2}-33x-20}{x+11}$
$45x^2-x+8$
$\int_1^{\infty}\left(\frac{21}{221x+110+110x^2}\right)dx$
$\int\sin\frac{4x}{5}3dx$
$472\left(-3\right)\left(-1\right)$
$2x^2-10x-28$
$\lim_{x\to\frac{\pi}{3}}\left(\frac{1-cos\left(x\right)}{x}\right)$
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