$\frac{dy}{dx}=\frac{x^2y+x^2-z-1}{x}$

$10-2log\left(7y+2\right)=6$

$\int\left(\frac{1}{1+\left(x+3\right)^2}\right)dx$

$\frac{2x}{4x^2-9}+\frac{3}{2x^2+x-3}$

$\left(z^2\right)\left(-7xyz\right)\left(-3x^3z\right)\left(2vxy^5\right)$

$\frac{d}{dx}\frac{x}{2}-\frac{2}{x}$

$\ln\left(e^6\ln\left(x\right)\right)$