$x^2-x+20$
$\lim_{x\to\infty}\left(\frac{sen\left(x\right)+tan\left(x\right)}{x}\right)$
$1-3x<4$
$\int\sin\left(x\right)^53dx$
$\lim_{x\to\frac{\pi}{0}}\left(\frac{1-cos\left(x\right)}{2sin^2\left(x\right)}\right)$
$n^3+216$
$\frac{x^5-x^48+x^2-2}{x^2+1}$
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