$\frac{dy}{dx}\left(x\sqrt{\frac{x^2-9}{x^2+9}}\right)$
$\frac{a^5\cdot\:a^4}{a^2}$
$\left(-h+\frac{1}{2}\right)^2$
$-24\:\frac{.}{.}\left(-3\right)$
$5\sin\left(x\right)-8=0$
$\frac{d}{dx}.003x^3+.02x^2+.3x$
$\frac{dy}{dx}=2+\sqrt{y-2x-1}$
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