AP EAPCET 20-Aug-2021 Shift 1 Paper
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Question : 48 of 160
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If the lines, joining the origin to the points of intersection of the curve 2 x 2 − 2 x y + 3 y 2 + 2 x − y − 1 = 0 and the line x + 2 y = k , are at right angles, then k 2 equals ______
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