I am trying to integrate sqrt(1+4*x^2)(adsbygoogle = window.adsbygoogle || []).push({});

I have been trying to rewrite this into sqrt(-4x+(2x + 1)^2) and putting u=2x+1 and substituting but I don't think that makes this any easier. Could someone please give me a hint.

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# Homework Help: Need help with integration

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