Find the value of x. Write your answer as a simplified radical if necessary.

Answer:
The answer is 3
This triangle is equal to the legs and also angular and by using Pythagoras then
[tex] {x}^{2} + {x}^{2} = {(3 \sqrt{2}) }^{2} \\ 2 {x}^{2} = 18 \\ then \: x = 3[/tex]