I put it in std form, did the homogeneous test. it passed with degree 2. I substituted y=ux and dy=udx+xdu and now I'm stuck. it needs to be simplified somehow but I don't know if ux is one var or if it's u*x. Same goes for udx and xdu. Is it really u*dx+x*du? even assuming that is correct, it doesn't get any simpler. What does the next step look like for this problem?(adsbygoogle = window.adsbygoogle || []).push({});

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# Stuck on one of the substitution method steps

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