oii,
2+√n=5
[tex]\sqrt{n} = 5 - 2[/tex]
[tex]\sqrt{n} = 3\\n = 9\\[/tex]
[tex]2 +\sqrt{9} = 5[/tex]
[tex]5 = 5[/tex]
portanto,
[tex]n = 9[/tex]
