Derivative of a Composite Function

$y'=4*\left(\sqrt{3*x+1}+\frac{1}{x+2}\right)^{3}\left(\frac{3}{2*\sqrt{3*x+1}}-\frac{1}{(x+2)^2}\right)$

$y'=\frac{4*\left(\sqrt{3*x+1}+\frac{1}{x+2}\right)^{3}\left(\frac{3}{2*\sqrt{3*x+1}}-\frac{1}{(x+2)^2}\right)}{\sqrt{3*x+1}+\frac{1}{x+2}}$

$y'=4*\left(\sqrt{3*x+1}+\frac{1}{x+2}\right)^{3}\left(\frac{3}{2*(3*x+1)^{1/2}}-\frac{2}{(x+2)^2}\right)$

$y'=4*\left(\sqrt{3*x+1}+\frac{1}{x+2}\right)^{3}\left(\frac{3*(3*x+1)}{2}-\frac{1}{(x+2)^2}\right)$