Question 1123303
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<pre>
Make a sketch.


Identify two right angled triangles in the sketch.


Each of these triangles has one leg of 3 units long and the hypotenuse of 6 units long.


Then the other leg of these triangles is  {{{sqrt(6^2- 3^2)}}} = {{{sqrt(27)}}} = {{{3*sqrt(3)}}} units long.


So the points on the x-axis are  {{{2+3*sqrt(3)}}}  and  {{{2-3*sqrt(3)}}}.
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Solved.