Answer:[tex]\sqrt{10} +\sqrt{15} -\sqrt{14} -\sqrt{21}[/tex]Step-by-step explanation:Let's first distribute the β2 :[tex]\sqrt{2} (\sqrt{5} )-\sqrt{2}( \sqrt{7} )=\sqrt{10} -\sqrt{14}[/tex]Now we can distribute the β3 :[tex]\sqrt{3} (\sqrt{5})- \sqrt{3} (\sqrt{7} )=\sqrt{15} -\sqrt{21}[/tex]Now we add these two together to get :[tex]\sqrt{10} +\sqrt{15} -\sqrt{14} -\sqrt{21}[/tex]