(\(\sqrt{5}+\sqrt{3}\)2-\(\sqrt{5}-\sqrt{3}\)2) का मान क्या है?
What is the value of (\(\sqrt{5}+\sqrt{3}\)2-\(\sqrt{5}-\sqrt{3}\)2)?
Explanation opens after your attempt
Correct Answer
A. \(4\sqrt{15}\)
Concept
Use the identity ((a+b)2-(a-b)2=4ab). Here the value is \(4\sqrt{15}\).
Why this answer is correct
The correct answer is A. \(4\sqrt{15}\). Use the identity ((a+b)2-(a-b)2=4ab). Here the value is \(4\sqrt{15}\).
Exam Tip
पहचान ((a+b)2-(a-b)2=4ab) लगाएं। यहाँ मान \(4\sqrt{15}\) है।
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