$9\left(4f+2\right)+4$

$\frac{\sqrt[3]{x}-2}{\left(x-8\right)\left(\sqrt{7+\sqrt[3]{x}}+3\right)}$

$\frac{dy}{dx}9x^{x^5}$

$y'=y\left(y+2\right)$

$16cosxcos2x$

$\lim_{x\to\infty}\left(xe^{-x^8}\right)$

$\left(\frac{2a^{2}c^{3}}{15b^{4}}\right)^{3}\left(\frac{30b^{6}}{4a^{2}c^{2}}\right)^{3}$