Răspuns:
[tex] \frac{12( \sqrt{6} + \sqrt{2} )}{6 - 2} = 3( \sqrt{6} + \sqrt{2} ) \\ \frac{4( \sqrt{7} + \sqrt{5} )}{7 - 5} = 2( \sqrt{7} - \sqrt{5)} [/tex]
[tex] \frac{8( \sqrt{6} - \sqrt{2} )}{6 - 2} = 2( \sqrt{6} - \sqrt{2} ) \\ \frac{6( \sqrt{5} - \sqrt{2} )}{5 - 2} = 2( \sqrt{5} - \sqrt{2} )[/tex]
