$$\cdot+1.\sqrt{2x^{3}+3x^{2}+6x+18(2$$
$\sqrt{3\left(x^{3}+x^{2}+2x+6\right)}+x$
$\frac{\sqrt{3}\left(3x^{2}+2x+2\right)+2\sqrt{x^{3}+x^{2}+2x+6}}{2\sqrt{x^{3}+x^{2}+2x+6}}$
