$\frac{d}{dy}\left(x^2+3xy+y-1\right)$
$\left(2y-2x\right)+\left(2y+2x\right)\frac{dy}{dx}=0$
$-4\left(x-3\right)+28x$
$\frac{z^2-1}{z^2-4z-5}$
$e\arccoth\left(\ln\left(xy\right)\right)+\sec\left(xy\right)$
$3x^2-2x=3$
$3x^5y=6$
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