COMEDK Exam 2020 Solved Paper
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Question : 142 of 180
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If the circles x 2 + y 2 − 2 x − 2 y − 7 = 0 and x 2 + y 2 + 4 x + 2 y + k = 0 cut orthogonally, then the length of the common chord of the circles is
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