$\left(x^2-2x\right)^4$

$\left(n+6\right)\left(n+9\right)$

$dy=3\cos\left(x\right)dy+y\sin\left(x\right)dx$

$\frac{dy}{dx}\left(\sqrt[6]{x-\frac{7}{x}}\right)$

$\frac{d}{dx}4^{2x}e^{5x}$

$1-2\sen^{2}t=2\cos^{2}t-1$

$\frac{dy}{dx}\left(\sec^2\left(x\right)+\csc^2\left(y\right)=4\right)$