(\(\sqrt{13}+2\)2-\(\sqrt{13}-2\)2) का मान क्या है?
What is the value of (\(\sqrt{13}+2\)2-\(\sqrt{13}-2\)2)?
Explanation opens after your attempt
Correct Answer
A. \(8\sqrt{13}\)
Concept
Use ((a+b)2-(a-b)2=4ab). Here \(a=\sqrt{13}\) and (b=2), so the value is \(8\sqrt{13}\).
Why this answer is correct
The correct answer is A. \(8\sqrt{13}\). Use ((a+b)2-(a-b)2=4ab). Here \(a=\sqrt{13}\) and (b=2), so the value is \(8\sqrt{13}\).
Exam Tip
पहचान ((a+b)2-(a-b)2=4ab) लगाएं। यहाँ \(a=\sqrt{13}\) और (b=2), इसलिए मान \(8\sqrt{13}\) है।
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