$\left(4\sqrt{2}\right)x\left(-\sqrt{8}\right)y$

$\lim_{x\to27}\left(\frac{x\left(x-27\right)}{\sqrt[3]{x}-3}\right)$

$\lim_{x\to\infty}\left(\frac{2x+5}{2-x}\right)$

$mn\sqrt{8a^4b^3}$

$\left(3m-5\right)-\left(m^2+3m-5\right)$

$\frac{dy}{dx}\left(y=x^{x^3}\right)$