$s\left(s^2\:+\:s\:+\:1\right)\left(s\:+\:2\right)$
$4^{-2}\cdot4^3$
$\lim_{x\to-1}\left(\frac{5x^2+7x+2}{x+1}\right)$
$4^24^24^3$
$\log_{x+3}\left(2x+3\right)+\log_{x+3}\left(x+5\right)=2$
$\left(10x+14x^2\right)+\left(6x\right)$
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