$n^2-n+1$
$\left(_{-3^3}\right)$
$\frac{\left(2a^{5\:}b^2\right)}{5a^7b^{-3}}3$
$8x^2-36x^2+54x-57$
$\frac{dy}{dx}+\frac{5y}{x}=-5x$
$3x^2-12x+1=0$
$2tan^2x\:=\:6$
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