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If secants are drawn thro P(2 -1) to the...

If secants are drawn thro P(2 -1) to the circle `x^(2)+y^(2)+2x=0` meeting it at A&B and Q lies on segment AB then locus of Q such that PA, PQ ,PB are in H.P is ax+by+c=0{a b c are least possible integers } then |a+b+c|=

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