I am super stuck on this problem!: Solve yy'+ x =(x^2+y^2)^1/2 I know that I'm supposed to use substitution. I used v=y^2  which v'=2yy' and sub it into the equation. After the substitution, I would get v/2 + x = (x^2+v)^(1/2). After sub, I got stuck in how to separate the v and x with the square root going on. Please help me. Thank you.

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