$514.05-65$
$\left(9x+7\right)+\left(x+3\right)$
$49x^2-54x+25$
$\lim_{x\to\infty}\left(\frac{2x^2+x-3}{x+1}\right)$
$\left(x^2-1\right)\left(5x^5\right)$
$x\left(8x-1\right)^4$
$\frac{d^2}{dx^2}=-\frac{49}{y^3}$
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