Răspuns :
Răspuns:
[tex]( \sqrt{2} + \sqrt{3} ) (\sqrt{2} - \sqrt{ 3} ) = \sqrt{2} {}^{2} - \sqrt{ 3} {}^{2} = 2 - 3 = - 1[/tex]
Am folosit formula (a-b) (a+b) = a^2 - b^2
Răspuns:
[tex]( \sqrt{2} + \sqrt{3} ) (\sqrt{2} - \sqrt{ 3} ) = \sqrt{2} {}^{2} - \sqrt{ 3} {}^{2} = 2 - 3 = - 1[/tex]
Am folosit formula (a-b) (a+b) = a^2 - b^2