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12. Locus of the pont of intersection of...

12. Locus of the pont of intersection of tangents to the parabolas y: 4 (x + 1) and y: 8 (x + 2). which are at right angles, is (A) x + 7 = 0 (C) x + 3 0 (B) x-y=4 (D) y-x-12 Let y2 = 4ax be a parabola and PO be

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