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Find the points on the hyperboloid $9x^2- 45y^2 + 5z^2 - 45$ where the tangent plane is parallel to the plane $x+5y-2z = 7$?

Can anyone help me figure this one out?
So far, I've figured out the gradient of the hyperboloid but I'm not sure where to go from there..

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    Is the equation of the hyperboloid $9x^2- 45y^2 + 5z^2 - 45=0$?2011-10-16

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