$\left(8xy+9m\right)^2$

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

$5x-7^2$

$\frac{d^{20}}{dx^{20}}\left(\frac{1}{x}\right)$

$\csc\left(2x\right)\cos\left(3x\right)-\csc\left(2x\right)-\cos\left(3x\right)+1=0$

$\sqrt[5]{\left(x^3+1\right)}^3$

$\left(\frac{1}{3}+\frac{x}{y}\right)\left(\frac{1}{3}-\frac{x}{y}\right)$