$1x^2-18x+81$

$14y^7z^7-7x^3y^3z^3$

$\int_4^{10}\left(x^3\cos\left(x\right)\right)dx$

$\lim_{x\to\infty}\left(\frac{x\ln\left(x+1\right)}{x^2+1}\right)$

$\frac{9}{\left(1+\csc\left(x\right)\right)^5}$

$\frac{dy}{dx}=\frac{\sqrt{x}}{7y}$

$\sqrt[3]{4ab^3}\sqrt{16a^2}$