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I have given a link to the topic there so the OP can see my work.Cauchy-euler [[ (x+3)^2 y'' + 3(x+3)y' +5y = 0 , x+3>0 ]] general solution?

I tried the [[ y = x^m, y' = mx^m-1, y'' = m(m-1)*x^m-2 ]] but when I do it the x don't cancel. Please explain and show steps, thank you.