$2n+1\cdot4n-3\cdot3-n$
$a\:-\:\frac{b\cdot c\:-\:c^2\cdot d}{e-c^2}$
$\frac{542.196}{1648}$
$1,8h^8p^2\:por\:0,2h^{10}p\:por\:hp^2$
$\left(x^3+2x^2-x\right)^3$
$\left(8+3x^6\right)^2$
$\lim_{x\to0}\left(\frac{7-79\cos\left(x\right)}{x^2}\right)$
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