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Question
State whether the following is irrational.
`(3 + sqrt(2))(3 - sqrt(2))`
Sum
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Solution
`(3 + sqrt(2))(3 - sqrt(2))`
= 9 – 2
= 7
7 is a rational number.
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Chapter 1: Rational and Irrational Numbers - EXERCISE 1B [Page 11]
