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The set of all values of a^2 for which the line x+y=0 bisects two distinct chords drawn from a point P\!\left(\dfrac1+a2,\,\dfrac1-a2\right) on the circle 2x^2+2y^2-(1+a)x-(1-a)y=0, is equal to: | Watch the step-by-step video solution for this NIMCET PYQ.