Question

express each one of the following with rational denominator 5/√11

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Answer 1

$= = > \: \: \frac{5}{ \sqrt{11} } \\ \\ = = > \: \: \frac{5}{ \sqrt{11} } \times \frac{ \sqrt{11} }{ \sqrt{11} } \\ \\ = = > \: \: \frac{5 \sqrt{11} }{11}$