Classify the following number as rational or irrational :
$(3 + \sqrt{23}) - \sqrt{23}$

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Solution

On simplifying given number, we get

$3 + \sqrt{2} 3 - \sqrt{2} 3$

$⟹ 3$

Which is a rational number.

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Question 1 (ii)
Classify $(3 + \sqrt{23}) - \sqrt{23}$ as rational or irrational.

Question 1 (ii)
Classify $(3 + \sqrt{23}) - \sqrt{23}$ as rational or irrational.

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