$\frac{dy}{dx}=\frac{e^{2x}}{4y^3}$

$2\cdot\left\{2\cdot\left[-2\cdot\left(-5+4\right)\cdot2\right]+1\right\}\cdot\left(-2\right)$

$\left(-7\right)\left(+3\right)-\left(-2\right)\left(-8\right)+16$

$\:6n^2-5n-6$

$\frac{d}{dx}\left(x^2\:=\:\frac{x-y}{x+y}\right)$

$\sqrt{2}cos2x-1=0$

$10x^2+7x\cdot x^2$