AP EAPCET 24-Aug-2021 Shift 1 Paper
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Question : 54 of 160
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If the circles x 2 + y 2 − 6 x − 8 y − 12 = 0 and x 2 + y 2 − 4 x + 6 y + k = 0 are perpendicular to each other, then ' k ' equals ______
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