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Questions  

If the lines ax+by+c = 0, bx+cy+a = 0 and cx+ay+b=0  abc are concurrent then the point of concurrency is

a
(0,0)
b
(1,1)
c
(2,2)
d
(-1,-1)

detailed solution

Correct option is B

abcbcacab=0a+b+c=0

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