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I have the equation that's in the attachment. Sorry I don't know how to write the equation here directly. My trouble is more or less like the one in the following example:

xln(x) + x^2 = 10

How do I solve for x??

In the equation that's in the file I'm solving for r3 btw.

xln(x) + x^2 = 10

How do I solve for x??

In the equation that's in the file I'm solving for r3 btw.

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