$\int\left(3x\cdot\sqrt{1+x^2}\right)dx$

$\int\sqrt{1-4\cos\left(x\right)^2}\sin xdx$

$\left(t^2+2\right)\left(t-1\right)$

$\frac{d}{dx}ln\left(\frac{\left(2-8x\right)^2}{x+1}\right)$

$\lim_{x\to\infty}\left(\frac{\left(x^3\cdot e^{-8\cdot x}\right)}{-8}\right)$

$\left(2m^2-n^3\right)\left(2m^2+n^3\right)$

$5m+30+5m+30$