$\frac{8x^2+28x+20}{2x+5}$

$\left(z-2x\right)\left(z-w\right)$

$\left(7x^{12}+13\right)^2$

$\frac{1}{6}pt-\frac{2}{5}p-\frac{3}{4}t+\frac{2}{3}pt-\frac{3}{5}p+\frac{7}{4}t+\frac{1}{6}pt$

$4^2a^4b^2$

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

$\left(2\right)\left(2\right)^5$