$\frac{27\left(2n^3+3n^2+n\right)}{6n^3}$
$\sqrt{\frac{x-1}{x^4+4}}$
$\left(7x^3+8x^3+4y+5x^3+6x^2\right)$
$\lim_{x\to-1}\left(\frac{x^2+x-2}{x^2-1}\right)$
$2w\:\cdot\:w^2$
$y=\frac{2x+3}{x^2-8x+12}$
$\frac{\left(6.24\cdot10^{18}\right)}{100}$
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