First Order D.E (Not Linear, Exact, or Separable)

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Homework Statement


What is the general solution of:

y'=(3*y^2-x^2)/(2*x-y)

Homework Equations

The Attempt at a Solution


This First Order equation is neither linear nor separable. I also have checked the Exact test, which turns to be Not Exact.

Any help regarding how this problem solution can be approached.

Thank you.
 
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There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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