$\left(4r^2+4r+10\right)$
$\frac{d^5}{dx^5}\left(2x^2-5x^3+7x\right)$
$\frac{dy}{dx}=\frac{2x}{x^2+1}+1$
$\left(x+6\right)^2-\left(x-2\right)\left(x+6\right)$
$\lim_{x\to-3}\left(2x+3\right)\left(x^2+1\right)$
$\frac{1}{2}\left(2x\right)^{-\frac{1}{2}}\left(2\right)$
$x^2+6x-78$
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