यदि \(r=\sqrt{2}+\sqrt{3}\) है तो \(r+\frac{1}{r}\) का सरल रूप क्या है?
If \(r=\sqrt{2}+\sqrt{3}\), what is the simplified form of \(r+\frac{1}{r}\)?
Explanation opens after your attempt
Correct Answer
A. \(2\sqrt{3}\)
Concept
\(\frac{1}{\sqrt{2}+\sqrt{3}}=\sqrt{3}-\sqrt{2}\). Adding gives \(2\sqrt{3}\).
Why this answer is correct
The correct answer is A. \(2\sqrt{3}\). \(\frac{1}{\sqrt{2}+\sqrt{3}}=\sqrt{3}-\sqrt{2}\). Adding gives \(2\sqrt{3}\).
Exam Tip
\(\frac{1}{\sqrt{2}+\sqrt{3}}=\sqrt{3}-\sqrt{2}\) होता है। जोड़ने पर \(2\sqrt{3}\) मिलता है।
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