[tex]\sqrt{99} = \sqrt{9\cdot 11} = \sqrt{9}\cdot\sqrt{11} = 3\sqrt{11}\\\\\sqrt{108} = \sqrt{36\cdot 3} = \sqrt{36}\cdot\sqrt{3} = 6\sqrt{3}\\\\\sqrt{80} = \sqrt{16\cdot5} = \sqrt{16}\cdot\sqrt{5} = 4\sqrt{5}\\\\\sqrt{88} = \sqrt{4\cdot22} = \sqrt{4}\cdot\sqrt{22} = 2\sqrt{22}[/tex]
