यदि \(\alpha+\beta=18\) और \(\alpha\beta=74\), तो कौन सा संयुग्मी अपरिमेय युग्म संभव है?
If \(\alpha+\beta=18\) and \(\alpha\beta=74\), which conjugate irrational pair is possible?
Explanation opens after your attempt
A. \(9+\sqrt{7}\) और \(9-\sqrt{7}\)\(9+\sqrt{7}\) and \(9-\sqrt{7}\)
Concept
The sum of \(9+\sqrt{7}\) and \(9-\sqrt{7}\) is (18), and the product is (81-7=74). In exams check both sum and product of options.
Why this answer is correct
The correct answer is A. \(9+\sqrt{7}\) और \(9-\sqrt{7}\) / \(9+\sqrt{7}\) and \(9-\sqrt{7}\). The sum of \(9+\sqrt{7}\) and \(9-\sqrt{7}\) is (18), and the product is (81-7=74). In exams check both sum and product of options.
Exam Tip
\(9+\sqrt{7}\) और \(9-\sqrt{7}\) का योग (18) और गुणनफल (81-7=74) है। परीक्षा में विकल्पों का योग और गुणनफल दोनों जांचें।
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