Finding the points on a surface x^2= 9 + yz closest to the origin. I have no idea how to go about this but it is a review question for a test tomorrow, so any help would be appreciated.

min { √ ( (9 + yz)^2 + (y^2) + (z^2) ) } = √17 → (y,z) = { (2√2, 2√2), (2√2, √2) }