$\lim_{x\to\infty}\left(\frac{ln\left(x^6-5\right)}{ln\left(x\right)cos\left(\frac{1}{x}\right)}\right)$

$n^4+10n^2m+25m^2$

$\left(2v-w\right)\left(v^2-2vw-w^2\right)$

$\int\left(\frac{x}{8}-2\right)^2dx$

$\frac{d^4}{dx^4}\left(4x^6+x^5-3\right)$

$12x^2-320x+1600$

$x+3+3x^2-3x+6$