1.

The plane 2x - 2y + z + 12 = 0 touches the sphere x2 + y2 + z2 - 2x - 4y + 2z - 3 = 0 at the point

A. (1, -4, -2)
B. (-1, 4, -2)
C. (-1, -4, 2)
D. (1, 4, -2)
Answer» C. (-1, -4, 2)


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