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Question
Expand:
`(7 - sqrt(3))^2`
Sum
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Solution
We have, `(7 - sqrt(3))^2`
= `(7)^2 + (sqrt(3))^2 - 2 xx 7 xx sqrt(3)` ...[Use (a – b)2 = a2 + b2 – 2ab]
= `49 + 3 - 14sqrt(3)`
= `52 - 14sqrt(3)`
Therefore, the required is `52 - 14sqrt(3)`.
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Chapter 1: Rational and Irrational Numbers - EXERCISE 1C [Page 15]
