$4n+6$

$\left(7-3y^5\right)^5$

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

$\lim\:_{x\to\:\infty\:}\left[\sqrt{x+\sqrt{x+\sqrt{x}-\sqrt{x}}}\right]$

$\frac{\sec\left(x\right)\cos\left(x\right)}{\csc^2\left(x\right)}=\sin^2\left(x\right)$

$3-2x\cdot2x^2-x+5$

$\lim_{x\to2\pi}\frac{\cos^2x-\sin x\cdot\cos x}{\coth x}$