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Krishnan Ramachandran (151)

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The answer to this question is x-2y+z=0
U may proceed as follows
For calculating equation of plane with given two lines
det x-a+d     y-a     z-a-d
       p-s          p       p+s       =0
       q-r           q       q+r    
 
Solving this or by solving
 
det  x-b+c    y-b    z-a-d
       p-s          p       p+s       =0
       q-r           q       q+r  
We get x-2y+z=0
If u have any problem...please reply 

Krishnan
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