Răspuns :
[tex]\sqrt{( \sqrt{10}-3) ( \sqrt{10}+3)}= \sqrt{10-9} =1 [/tex]
[tex]M= \sqrt{ab} = \sqrt{ (\sqrt{10} -3) (\sqrt{10}+3} )}= \sqrt{\sqrt{ 10^{2}} - 3^{2} }} = \\ \sqrt{ 10-9 }=1[/tex]