`(\sqrt{6}+\sqrt{2}).(\sqrt{3}-2). \sqrt{2}+\sqrt{3}`
`=(\sqrt{18} - 2\sqrt{6} + \sqrt{6} - 2\sqrt{2} )\sqrt{2} +\sqrt{3}`
`= (3\sqrt{2} - \sqrt{6} - 2\sqrt{2})\sqrt{2} +\sqrt{3}`
`= 3(\sqrt{2})^2- \sqrt{12} - 2(\sqrt{2})^2 +\sqrt{3}`
`= 3.3 - 2\sqrt{3} - 2.2 + \sqrt{3}`
`=9 - 4 - \sqrt{3}`
`=5 - \sqrt{3}`