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Question
Compare the following pair of surd.
`2sqrt 7, sqrt 28`
Sum
Solution
Since `2sqrt 7 = sqrt(4 xx 7) = sqrt 28`
∴ `sqrt28 = sqrt28`
That is, `2sqrt7 = sqrt28` ...(both are equal)
So, `2 sqrt 7 = sqrt 28`
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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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