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Question
Compare the following pair of surd.
`7, 2 sqrt 5`
Sum
Solution
Since , 7 = `sqrt 49` and
`2 sqrt 5 = sqrt (4 xx 5) = sqrt 20`
`sqrt 49 > sqrt 20`
So, `7 > 2 sqrt 5`
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Comparison of Surds
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Chapter 2: Real Numbers - Practice Set 2.3 [Page 30]
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