I am stuck half way in solving this problem (the square root nominator confuses me) :(adsbygoogle = window.adsbygoogle || []).push({});

http://img235.imageshack.us/img235/8459/1mi1.jpg [Broken]

and I cannot get it to match the answer given on the back of the textbook:

http://img235.imageshack.us/img235/7041/answerop5.jpg [Broken]

Please teach me how to solve this problem. Thanks. :)

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# Integration involving Roots

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