$x\left(\sqrt{1+\frac{1}{x}}\:-1\right)$

$\frac{dy}{dx}=\left(\frac{y+1}{xy+x}\right)$

$7^{10}\cdot\:7^4\:$

$\frac{dy}{dx}=\frac{\left(e^{2x-3y}\right)}{m+2}$

$\frac{x^2}{4+x^4}$

$\left(\sqrt{5}\cdot\sqrt{3}\right)\left(\sqrt{5}\cdot\sqrt{3}\right)$

$sin\left(x\right)\cdot cot\left(2x\right)$