Question

Find the center C and the radius a for the spheres in Exercises 51–52.

51. (x + 2)2 + y2 + (z - 2)2 = 8

52.x2 + y2 + z2 + 4x - 4z =0

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Author: Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher: Cengage,
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