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**rlarach** The center and radius of circumference **M **are (0,0) and **10**, respectively. The center and radius of circumference **P **are (8,0) and **2**, respectively. Circumference Q is internally tangent to circumference **M **and externally tangent to circumference **P**.Of course that there are infinitely many circumferences Q which have this property. Determine and graph the equation of the curve that contains the centers of all the circumferences of the **Q **kind.

:confused::confused:

THANKS IN ADVANCE FOR YOUR HELP!!!!!