( \left\(\sqrt{7}+\sqrt{2}\right\)2-\left\(\sqrt{7}-\sqrt{2}\right\)2 ) का मान क्या है?
What is the value of ( \left\(\sqrt{7}+\sqrt{2}\right\)2-\left\(\sqrt{7}-\sqrt{2}\right\)2 )?
Explanation opens after your attempt
Correct Answer
A. \(4\sqrt{14}\)
Concept
Use ( (a+b)2-(a-b)2=4ab ). Here \(4\sqrt{7}\sqrt{2}=4\sqrt{14}\).
Why this answer is correct
The correct answer is A. \(4\sqrt{14}\). Use ( (a+b)2-(a-b)2=4ab ). Here \(4\sqrt{7}\sqrt{2}=4\sqrt{14}\).
Exam Tip
सूत्र ( (a+b)2-(a-b)2=4ab ) लगाएँ। यहाँ \(4\sqrt{7}\sqrt{2}=4\sqrt{14}\) मिलेगा।
Login to save your score, XP, coins and progress.