Question

1. Rationalize the denominator.2/3√7

Answer 1

$\: \: \: \: \frac{2}{3 \sqrt{7} } \\ = \frac{2}{3 \sqrt{7} } \times \frac{ \sqrt{7} }{ \sqrt{7} } \\ = \frac{2 \sqrt{7} }{21}.$
Hence,
Rationalised.



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Answer 2

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Solution

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=> 2/3√7 × 3√7 / 3√7

=> 6√7 / 63

=> 2√7 / 21