$\int\frac{9x^2-140x+579}{\left(x-1\right)\left(x-9\right)^2}dx$
$3x^2-2x-7=0$
$\frac{d}{dx}x^3-y^3=x+8$
$\left(3x-2\right)^2-\left(5x-1\right)^2$
$pq-pq-1$
$5x^2-40x+15$
$2x^6\:-x^{-2}+3x^{-2}-2x^6$
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