If the lengths of the tangents from the point (1, 2) to the circles x – InterviewSolution

1.	If the lengths of the tangents from the point (1, 2) to the circles x2+y2+x+y−4=0 and 3x2+3y2−x−y−λ=0 are in the ratio 4:3 then λ=
Answer» If the lengths of the tangents from the point (1, 2) to the circles $x^{2} + y^{2} + x + y - 4 = 0$ and $3 x^{2} + 3 y^{2} - x - y - λ = 0$ are in the ratio 4:3 then $λ =$

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