Three normals to \( y^{2}=4 x \) pass through the point \( (15,12) \). Show that one of the norm...

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Three normals to \( y^{2}=4 x \) pass through the point \( (15,12) \). Show that one of the normals is given by \( \mathrm{y}=\mathrm{x}-3 \) \& find the equations of the others
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