$a+\frac{1}{a}=5$

$\left(n-2\right)^2$

$\int x\left(\frac{x^3}{4}+\frac{4}{x^2}\right)dx$

$\left(\frac{64s}{27t}\right)^{\frac{4}{3}}$

$\lim_{x\to36}\left(\frac{6-\sqrt{x}}{36x-x^2}\right)$

$\left(\frac{-36a^5b^9}{9a^6b^{-5}}\right)^{-3}$

$\int8x^2\cdot\sqrt{2x+1}dx$