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

$2\frac{3x}{4}^6$

$\frac{x^2+5x+12}{x-3}$

$\lim_{x\to0}\left(\frac{\left(\frac{\left(4+2h\right)}{3+h}-\frac{4}{3}\right)}{x}\right)$

$\ln\left(\sqrt[3]{e^{2}}\sqrt{e}\right)=\frac{7}{6}$

$\frac{\left(x+1\right)\left(x-1\right)}{2}$

$-5x\:\:\:=45$