Answer:
x = 

Explanation:
Since the given triangle is equilateral the all 3 sides would be: 
 or
 or 
 . Now we know that the base of the right triangle is
. Now we know that the base of the right triangle is 
 and the hypotenuse is
 and the hypotenuse is 
 . Therefore we can say;
. Therefore we can say;
A² + B² = C²
(
 )² + x² = (
)² + x² = (
 )²
)²
6 + x² = 12
x² = 12 - 6
x² = 6
x = 

Therefore; x = 
 is the length of x, in simplest radical form.
 is the length of x, in simplest radical form.