Find the center and the radius of the sphere. $x^2 + y^2 + z^2 + 5x + 6z = 0$ The center of the sphere is $(?, ?, ?)$. (Simplify your answers.)
Added by Albert G.
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The standard form of the equation of a sphere is: $$(x-h)^2 + (y-k)^2 + (z-l)^2 = r^2$$ where (h, k, l) is the center of the sphere and r is the radius. Show more…
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