$z^2+2z\left(z-y\right)+\left(z-y\right)^2$

$\lim\:_{x\to\:\infty\:}\left(\frac{3sinx}{2x^2}\right)$

$\frac{d^2}{dx^2}\left(\frac{1}{x^2+y^2}\right)$

$\frac{3x^5+2x-3}{x^3}$

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

$29x-\frac{56}{\left(3x-7\right)\left(2x-3\right)}$

$\sqrt[4]{2w^6}\cdot\sqrt[4]{8w^3}$