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µª®×¡G x=2,  y=+/-  44^(1/2)  , ½u¬Ox=2  

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In fact, these two circles having centre on the x-axis because there are no terms having 'y'.
By the fact above, the intersection points must have the same x-coordinate if there are two intersection points.
This is true although they have different radius.
(two circles may touch each only!!)
(you can prove it by drawing millions circles or mathetical method, i can show it to u if u need )      >.<