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Points $A,$ $B,$ and $C$ are given in the coordinate plane. There exists a point $Q$ and a constant $k$ such that for any point $P$,
\[PA^2 + PB^2 + PC^2 = 3PQ^2 + k.\]
If $A = (7,-11),$ $B = (10,13),$ and $C = (18,-22)$, then find the constant k.

 Mar 26, 2024
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https://web2.0calc.com/questions/help-coordinates_136

 

cool cool cool

 Mar 26, 2024

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