.
In a coordinate plane, the points on the  x-axis  are the points (x,0) for arbitrary "x".
So, the points you are looking for, satisfy this distance equation
    
 = 6,
or
    
 = 36.
Square both sides to get
    (x-2)^2 + 9 = 6^2
    (x-2)^2 = 36 - 9
    (x-2)^2 = 27
    x - 2 = 
 = +/- 
Hence, there are two values for x  
 = 
  and  
 = 
.
So, the points are  A = (
,0)  and  B = (
,0).     ANSWER
Solved.