$809.787375+1.357123375$
$x^3-37x-84$
$\lim_{x\to0}\left(\frac{4e^x-4}{\sin\left(x\right)}\right)$
$\frac{a^4+a}{a+1}$
$\frac{3}{x+1}-\frac{2}{x^2-1}+\frac{x}{x-1}$
$p^2+9p+49=0$
$x^3+2^2-x-2$
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