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Q.

The value of  y1y2y3(y1x1)(y2x2)(y3x3)  when (xi,yi),i=1,2,3 Satisfy both x33xy2=2005&y33x2y=2004   is 

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answer is 1002.

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Detailed Solution

 x33xy2=2005[(xy)33(xy)=2005y3]×2004             ……(1)
y33x2y=2004[13(xy)2=2004y3]×2005                   ….(2)
     Subtract (1) & (2) & put  xy=t
 2004t3+6015t26012t2005=0             Question Image    
       
y1.y2.y2(y1x1)(y2x2)(y3y3)=1(1t1)(1t2)(1t3)=11+(t1t2+t2t3+t3t1)(t1+t2+t3)t1t2t3      
      Put values 
      =1002

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The value of  y1y2y3(y1−x1)(y2−x2)(y3−x3)  when (xi,yi),i=1,2,3 Satisfy both x3−3xy2=2005&y3−3x2y=2004   is