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Mathematics, 18.10.2021 17:20 nicktroutt27

\frac{1}{1 +  \sqrt{2} }   + \frac{1}{ \sqrt{2 +  \sqrt{3} } }  +  \frac{1}{ \sqrt{3  + \sqrt{4} } }  +  \frac{1}{ \sqrt{5 +  \sqrt{6} } }  +  \frac{1}{ \sqrt{6 +  \sqrt{7} } }  +  \frac{1}{ \sqrt{7 +  \sqrt{8} } }  +  \frac{1}{ \sqrt{8 +  \sqrt{9} } }  = 2 mister brainless i want full explanation

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