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If the three lines ax+a2y+1=0, bx+b2y+1=0 and cx+c2y+1=0 are concurrent, show that atleast two of the three constants a,b,c are equal.

Answer» If the three lines ax+a2y+1=0, bx+b2y+1=0 and cx+c2y+1=0 are concurrent, show that atleast two of the three constants a,b,c are equal.


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