$\left(9+x^2-2x\right)^2$
$\frac{dy}{dx}\:\left(\sqrt{\frac{x-7}{x^2+8}}\right)$
$44+9-\left(-7\right)$
$2=5$
$\lim_{x\to4}\left(\frac{\left|x^2-3x-4\right|+2x-8}{\sqrt{x}-2}\right)$
$\cos\left(a\right)\csc\left(a\right)$
$\frac{d}{dx}2x\sqrt{y}+4y=6$
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