If A and B be the points (3,4,5) and (-...

If A and B be the points (3,4,5) and (-1,3,-7) respectively find the equation of the set of points P such that `PA^(2)+PB^(2)=K^(2)` where k is a constant

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The correct Answer is:

`x^(2)+y^(2)+z^(2)-2x-7y+2z=(k^(2)-109)/(2)`

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