$8-\left(-36\right)-\left(-62\right)$
$e=\left(2sen10+3cos80\right)csc10$
$\frac{s^2-2st+t^2}{s-t};\:s=5\:;\:t=6$
$\frac{x^5}{5}-2x^2+c$
$\frac{3x^6+27x^5-33x^2}{3x^2}$
$17-6\cdot2$
$1+\cot^2\left(\frac{2\pi}{3}\right)$
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