यदि \(c=\sqrt{26}+\sqrt{10}\) और \(d=\sqrt{26}-\sqrt{10}\) हैं तो (cd) और (c-d) का सही युग्म कौन-सा है?
If \(c=\sqrt{26}+\sqrt{10}\) and \(d=\sqrt{26}-\sqrt{10}\), which is the correct pair of (cd) and (c-d)?
Explanation opens after your attempt
A. (16), \(2\sqrt{10}\)
Concept
(cd=26-10=16) and \(c-d=2\sqrt{10}\). Find both values separately in a conjugate pair.
Why this answer is correct
The correct answer is A. (16), \(2\sqrt{10}\). (cd=26-10=16) and \(c-d=2\sqrt{10}\). Find both values separately in a conjugate pair.
Exam Tip
(cd=26-10=16) और \(c-d=2\sqrt{10}\) है। संयुग्मी युग्म में दोनों मान अलग-अलग निकालें।
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