$\frac{x^3+x^2-12}{x-2}$

$x2+166x+55$

$-\left\{-12-\left(-3\right)\right\}$

$\frac{\left(x^2+xy+y^2\right)^6}{2\left(x^2+y^2\right)}$

$\ln\left(5x+4\right)-\ln\left(2\right)=\frac{1}{2}\ln\left(x+4\right)$

$\:\frac{2x+6}{4x^2-12x+9}$

$3\left(\frac{\pi}{4}\right)+\cot\left(\frac{\frac{\pi}{4}}{2}\right)$