Respuesta :

12+sqrt 5, is your answer, hoped this helped, 

Answer:

the conjugate of  [tex]12-\sqrt{5}[/tex] is  [tex]12+\sqrt{5}[/tex]

Step-by-step explanation:

the conjugate of 12 - sqrt 5

In general , the conjugate of a+bi is a-bi

to get the we change the sign in the middle

Change the negative sign to positive sign before the square root

the conjugate of  [tex]12-\sqrt{5}[/tex] is  [tex]12+\sqrt{5}[/tex]