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प्रश्न
Rationalize the denominator.
`2/(3 sqrt 7)`
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उत्तर
`2/(3 sqrt 7)`
`= 2/(3 sqrt 7) xx sqrt 7/sqrt7` ...[multiply numerator and denominator by `sqrt7`]
`= (2sqrt7)/(3 xx 7)`
`= (2sqrt 7)/21`
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