यदि \(a=\sqrt{5}+1\) और \(b=\sqrt{5}-1\) हैं तो (a+b) क्या है?
If \(a=\sqrt{5}+1\) and \(b=\sqrt{5}-1\), what is (a+b)?
Explanation opens after your attempt
B. \(2\sqrt{5}\)
Concept
\(a+b=2\sqrt{5}\), which is irrational. Add like radical terms.
Why this answer is correct
The correct answer is B. \(2\sqrt{5}\). \(a+b=2\sqrt{5}\), which is irrational. Add like radical terms.
Exam Tip
\(a+b=2\sqrt{5}\) है जो अपरिमेय है। समान मूल वाले पदों को जोड़ें।
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