यदि \(x=\sqrt{6}+\sqrt{2}\) और \(y=\sqrt{6}-\sqrt{2}\), तो (xy) क्या है?
If \(x=\sqrt{6}+\sqrt{2}\) and \(y=\sqrt{6}-\sqrt{2}\), what is (xy)?
Explanation opens after your attempt
Correct Answer
A. (4)
Concept
(xy=\(\sqrt{6}\)2-\(\sqrt{2}\)2=6-2=4). Conjugate multiplication saves time in exams.
Why this answer is correct
The correct answer is A. (4). (xy=\(\sqrt{6}\)2-\(\sqrt{2}\)2=6-2=4). Conjugate multiplication saves time in exams.
Exam Tip
(xy=\(\sqrt{6}\)2-\(\sqrt{2}\)2=6-2=4) है। परीक्षा में संयुग्मी गुणन से समय बचता है।
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