यदि \(c=\sqrt{6}+\sqrt{2}\) और \(d=\sqrt{6}-\sqrt{2}\) हैं, तो (cd) और (c-d) का सही युग्म कौन-सा है?
If \(c=\sqrt{6}+\sqrt{2}\) and \(d=\sqrt{6}-\sqrt{2}\), which is the correct pair of (cd) and (c-d)?
Explanation opens after your attempt
Correct Answer
A. (4), \(2\sqrt{2}\)
Concept
(cd=6-2=4) and \(c-d=2\sqrt{2}\). In conjugate forms find the product and difference separately.
Why this answer is correct
The correct answer is A. (4), \(2\sqrt{2}\). (cd=6-2=4) and \(c-d=2\sqrt{2}\). In conjugate forms find the product and difference separately.
Exam Tip
(cd=6-2=4) और \(c-d=2\sqrt{2}\) है। संयुग्मी रूप में गुणन और अंतर अलग-अलग निकालें।
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