$\int\frac{1}{z\left(z-1\right)\left(2-z\right)}dz$

$\left(\frac{3}{5}x^{-1}+\frac{1}{2}y\right)^2$

$\lim_{x\to\infty}\left(x^{\frac{1}{x}}\right)$

$\int\frac{3x-7}{\left(x^2+2\right)\left(x-3\right)}dx$

$3xy+2x-4y=1$

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

$13-\left(-5\right)-2$