A tangent and a normal are drawn at the point P(2,−4) on the parabol – InterviewSolution

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1.	A tangent and a normal are drawn at the point P(2,−4) on the parabola y2=8x, which meet the directrix of the parabola at the points A and B respectively. If Q(a,b) is a point such that AQBP is a square, then 2a+b is equal to
Answer» A tangent and a normal are drawn at the point $P (2, - 4)$ on the parabola $y^{2} = 8 x$ , which meet the directrix of the parabola at the points $A$ and $B$ respectively. If $Q (a, b)$ is a point such that $A Q B P$ is a square, then $2 a + b$ is equal to

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