Hi all,(adsbygoogle = window.adsbygoogle || []).push({});

I've got this problem:

I think the setup should be this:Code (Text):Consider the points P such that the distance from P to A(-1,5,3) is twice the distance from P to B(6,2,-2). Show that the set of all such points is a sphere, and find its center and radius.

But when I try to work it out, I just end up with a mess and no equation for a sphere. Any help appreciated.Code (Text):sqrt[(x+1)^2 + (y-5)^2 + (z-3)^2] = 2*sqrt[(x-6)^2 + (y-2)^2 + (z+2)^2]

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Problem with polynomials and spheres

**Physics Forums | Science Articles, Homework Help, Discussion**