$2n^2-3n+1$
$\int\left(x^2-2\right)sin\left(2x\right)dx$
$\frac{2}{5}\left(x-10\right)$
$x^2+6x-2$
$\frac{20x^2-60x+46}{\left(x+1\right)\left(2x-5\right)\left(x-1\right)}$
$x^2+12x\:>6x$
$-2sinx-sec^{2x}$
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