$3x^2\:-\:12x\:+32$
$2x+4<-1$
$81w^2-w^2y^4$
$\frac{1}{s^4+1}$
$\int11xe^{-2x}dx$
$\frac{x^2-4}{x-2\:}$
$\frac{4x^3+2x^2}{x+3}$
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