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## Homework Statement

Need to do this integral as part of a problem

[itex]\int[/itex] [itex]\frac{xdx}{\sqrt{x^2+a^2-\sqrt{2}ax}}[/itex]

I can't think of any substitution that would work, or any way to factorize.

I think this is a standard integral, but can't remember everyone so I just want to learn to solve it.