कौन सा विकल्प (\(\sqrt{11}+\sqrt{5}\)2-\(\sqrt{11}-\sqrt{5}\)2) का मान है?
Which option is the value of (\(\sqrt{11}+\sqrt{5}\)2-\(\sqrt{11}-\sqrt{5}\)2)?
Explanation opens after your attempt
Correct Answer
A. \(4\sqrt{55}\)
Concept
By identity the difference is (4ab), where \(a=\sqrt{11}\) and \(b=\sqrt{5}\). So the answer is \(4\sqrt{55}\).
Why this answer is correct
The correct answer is A. \(4\sqrt{55}\). By identity the difference is (4ab), where \(a=\sqrt{11}\) and \(b=\sqrt{5}\). So the answer is \(4\sqrt{55}\).
Exam Tip
सूत्र से अंतर (4ab) होता है जहाँ \(a=\sqrt{11}\) और \(b=\sqrt{5}\) हैं। इसलिए उत्तर \(4\sqrt{55}\) है।
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