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Question

If the distance between the points A (4, p) and B(1, 0) is 5 then p = 


  1. 4 only                

  2. 4 only        

  3. ±4     

  4. 0


Solution

The correct option is C

±4     


Distance formula = (x2x1)2+(y2y1)2

(41)2+(p0)2=5
9+p2=25
p2=259=16
p=+4,4

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