$\ln\left(3x^2-27x+54\right)$

$\left(a^2c^3\right)\left(-3b^2c\right)\left(-5a^2b\right)$

$\frac{sinx}{cosx+cosx^2}$

$4^{\left(-3\right)^2}$

$\frac{7m}{13}\left(\frac{13m}{17}+\frac{17n}{3}\right)-\frac{3n}{7}\left(7+\frac{7m}{13}\right)$

$\int_{-2}^0\left(\frac{3}{4}\left(x^2-6\right)\right)dx$

$\frac{x^a}{x^2}$