[tex]a=14+2\sqrt{18}[/tex]
[tex]\sqrt{18}=3\sqrt{2}[/tex]
[tex]a=14+2*3\sqrt{2}[/tex]
[tex]a=14+6\sqrt{2}[/tex]
[tex]b=2(7-3\sqrt{2} )[/tex]
[tex]b=14-6\sqrt{2}[/tex]
Media aritmetică a doua numere = [tex]\frac{a+b}{2}[/tex]
[tex]=>\frac{14+6\sqrt{2} +14-6\sqrt{2} }{2} =\frac{14+14}{2} =\frac{28}{2} =14[/tex]
