If P = (91- 7 J + 5k) and Q = (31+2J-6k)
then the value of (P + Q) . (P-Q) ?
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P P and Q are 5-7) - 2k and - 31+3] +6k respectively. The vector The position vectors of the points P and Q are 5i + 7) 2k and - 3 A-3i-14k pass through the point P and the vector B A third vector 2i+7j -5k intersection. -31+2 +4k passes throuchih intersects vectors A and B. Find the position vector
of point of
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