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Can $\frac{4+\sqrt{40}}{2}$ be simplified to $2+\sqrt{10}$ manually?

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    $\sqrt{40}=2\sqrt{10}$...2011-07-23
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    For more information,here: http://en.wikipedia.org/wiki/Nth_root2011-07-24
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    Too trivial to be discussed here.2014-06-19

2 Answers 2