$\lim_{x\to\infty}\left(\frac{9+x}{x}\right)^2$

$\sqrt[3]{5b^3c^5}$

$\int\frac{4x-18}{x\left(x^2+9\right)}dx$

$\lim_{x\to1}\left(\frac{x^3-3x^2+3x+1}{x-1}\right)$

$8.6\cdot0.005$

$\frac{\left(a^{\frac{6}{9}}\right)\left(a^{\frac{2}{6}}\right)\left(a^{\frac{6}{6}}\right)}{\left(a^{-8}\right)}$

$16\cdot22$