[tex]\color{pink}{ \colorbox{yellow}{\colorbox{white} {question:-}}}[/tex]​

[tex] \frac{1}{1 + \sqrt{2} } + \frac{1}{ \sqrt{2 + \sqrt{3} } } + \frac{1}{ \sqrt{3 + \sqrt{4} } } + \frac{1}{ \sqrt{4 + \sqrt{5} } } + \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[/tex]

[tex] \huge { \color{blue}{ \fbox{ \textsf{ \textbf{i \: want \: full \: explanation}}}}}[/tex]
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