$\left(\frac{2}{5}a^4b^3-ab\right)\left(\frac{2}{5}ab-\frac{2}{5}a^4b^3\right)$

$p^3-5p$

$\int\left(x^2\left(3\cdot x+5\right)^5\right)$

$\frac{x^8-256}{x^2+4}$

$\left(\left(-5\right)^4\right)^2\:\cdot\:\left(-5\right)^2$

$\lim_{x\to\infty}\left(x-e^{2x-2}\right)$

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