If the circles ${x^2}\, + \,{y^2} + \,2ax\, + \,cy\, + a\,\, = 0$ and ${x^2}\, + \,{y^2} - \,3ax\, + \,dy\, - 1\,\, = 0$ intersect in two ditinct points P and Q then the line 5x + by - a = 0 passes through P and Q for :
exactly one value of a
no value of a
infinitely many values of a
exactly two values of a
Solution
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