Question 1175011
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                    TWIN  problem was solved under this link


https://www.algebra.com/algebra/homework/Graphs/Graphs.faq.question.1175010.html


                              4 minutes ago.



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Are you going to list all possible numbers as the center coordinates and radii ?


                              Does your curiosity extend so far ?




For your info:   there are  INFINITELY  MANY  such numbers.



PLEASE  DO  NOT  POST  SAME  TYPE  OF  PROBLEMS  AGAIN.



Thank you.



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I got your comment.


Let me tell you THIS:


<pre>
    1)  Please do not teach me how to teach.

        I know it in 77 times better than you.



    2)  Your reaction on my posts is absolutely INADEQUATE.
</pre>