$$\log\left(2x-4\right)=2$$

$$\frac{dy}{dx}\left(y^2+2xy+x^2\right)=1$$

$$5\frac{dy}{dx}+45y=9$$

$$\left(\frac{3x^2}{5y^2}\right)^4$$

$$\sqrt{x}^4$$

$$\int\frac{1}{\left(x-3\right)\left(x+1\right)^2}dx$$

$$\left(\frac{1}{3}x+3y\right)^5$$