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
Correct Answer

A. \(9+\sqrt{7}\) और \(9-\sqrt{7}\)\(9+\sqrt{7}\) and \(9-\sqrt{7}\)

Step 1

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.

Step 2

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.

Step 3

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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Mathematics Answer, Explanation and Revision Hints

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?

Correct Answer: A. \(9+\sqrt{7}\) और \(9-\sqrt{7}\) / \(9+\sqrt{7}\) and \(9-\sqrt{7}\). Explanation: \(9+\sqrt{7}\) और \(9-\sqrt{7}\) का योग (18) और गुणनफल (81-7=74) है। परीक्षा में विकल्पों का योग और गुणनफल दोनों जांचें। / 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.

Which concept should I revise for this Mathematics MCQ?

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.

What exam hint can help solve this Mathematics question?

\(9+\sqrt{7}\) और \(9-\sqrt{7}\) का योग (18) और गुणनफल (81-7=74) है। परीक्षा में विकल्पों का योग और गुणनफल दोनों जांचें।