$\sqrt[3]{ab^{-1}}c^{-2}\left(a^{-1}b^{-2}c^{-4}\right)^{-\frac{1}{6}}$

$\frac{d^9}{dx^9}\left(\cos\left(3x\right)\right)$

$150\left(\frac{300y}{y+2}+\frac{160x}{x+4}\right)$

$27x^3+81x^2+81x+27$

$-\sqrt{3}\csc\left(x\right)=2$

$\frac{x^3-2x^2+4}{x^2}$

$\frac{2x^3+29x^2-115x+88}{x+1}$