$\frac{\left(3x\right)^4\left(6x\right)^3\left(8x\right)^2}{x-3}$

$3m^2-3$

$\int_0^12x^2e^{-3x}dx$

$\left(2x+1\right)e^{0.1x}$

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

$3x-8>4x-15$

$\frac{\tan\left(a\right)+\cot\left(a\right)}{\tan\left(a\right)-\cot\left(a\right)}$