Two tangent lines \( L_{1} \) and \( L_{2} \) are drawn from the point \( (2,0) \) to the parabo... VIDEO
Two tangent lines \( L_{1} \) and \( L_{2} \) are drawn from the point \( (2,0) \) to the parabola \( 2 y^{2}=-x \). If the lines \( L_{1} \) and \( L_{2} \) are also tangent to the circle \( (x-5)^{2}+y^{2}=r \), then \( 17 r \) is equal to
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