Respuesta :

Answer:

5 + [tex]\sqrt{2}[/tex]

Step-by-step explanation:

Given a ± [tex]\sqrt{b}[/tex] , then the conjugate is

a ∓ [tex]\sqrt{b}[/tex]

Given

5 - [tex]\sqrt{2}[/tex] , then the conjugate is 5 + [tex]\sqrt{2}[/tex]