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The sum of the distances of a moving poi...

The sum of the distances of a moving point from the points (5 , 0 , 0) and ( - 5 , 0 , 0) is always 20 unit . Find the equation to the locus of the moving point .

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The correct Answer is:
`3x^(2) + 4y^(2) + 4z^(2) = 300`
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