$\int\frac{35tan^{-1}\left(x\right)}{x^2}dx$

$3a^{\left(2\right)}bac^{\left(3\right)}-2c^{\left(2\right)}ba^{\left(3\right)}+4a^{\left(3\right)}c^{\left(3\right)}b+2ca^{\left(3\right)}bc$

$\int\left(tan^5\:\frac{x}{3}sec^2\:\frac{x}{3}\right)dx$

$16n^{2\:}-\:9$

$3^{-5}\cdot3^6$

$\log\left(x+2\right)=2\log x$

$\int5x^3\csc^2x^4dx$