Two Spheres (AR Modeling Challenge)

In this GeoGebra Augmented Reality modeling challenge, the goal is to construct two spheres [i]by authoring only 2 surface equations. [/i][br][br][b]Clues:[/b][br][br]The center of each sphere is 2.2 units away from (0,0,0).[br][br]The radius of each sphere is 1.5 units.
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Information: Two Spheres (AR Modeling Challenge)