$3^3-2^4$
$8-x^2<\:0$
$\left(x\frac{1}{1}-y\frac{1}{2}\right)$
$\lim_{x\to\frac{\pi}{2}}\left(cosx-senx\right)^{tanx}$
$\lim_{x\to-\infty}\left(\frac{2x^3}{2x^2+1}\right)$
$144m+48$
$6-9n+5$
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