$\left(m+n\right)\cdot\left(m^3-n^3\right)$

$\ln\left(x\right)=\ln\left(x+6\right)-\ln\left(x-4\right)$

$\int\frac{r^2}{\sqrt{3+2r}}dr$

$\left[\sqrt{1+\sqrt{1\sqrt{1}}}\right]4$

$\int\left(4tan^5\left(2x\right)\right)dx$

$c+c+c-10+20$

$\lim_{x\to\infty}\left(\frac{sin\left(x\right)-x}{cos\left(2x\right)-1}\right)$