$4x^2-5x+7$
$\lim_{x\to0}\left(\frac{cos\left(8x\right)}{x^2-1}\right)$
$\left(-2\right)\cdot\left(-27\right)$
$3\left(y+5\right)$
$\left(10y^3+7\right)^2$
$-17+1$
$3x^2-2x-5$
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