$\lim_{x\to-1}\left(\frac{2x^2+2x+1}{x^4-1}\right)$
$x^2-5x+1<\:0$
$\int\frac{10x+2}{\left(3x+1\right)\left(x-1\right)}dx$
$\sqrt[5]{a^6}b^7$
$\frac{dy}{dx}\left(x^2+y^2=c\right)$
$m^2+34^2-4m$
$\left(3x-9\right)\left(3x+7\right)$
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