Medium Mathematics Polynomials Class 10 Level 26

यदि \(u=6+\sqrt{5}\) और \(v=6-\sqrt{5}\) हैं तो (uv) का मान क्या है?

If \(u=6+\sqrt{5}\) and \(v=6-\sqrt{5}\), what is the value of (uv)?

Explanation opens after your attempt
Correct Answer

A. (31)

Step 1

Concept

Conjugate multiplication gives ((6)2-\(\sqrt{5}\)2=36-5=31). Use \(a^2-b^2\) in such questions.

Step 2

Why this answer is correct

The correct answer is A. (31). Conjugate multiplication gives ((6)2-\(\sqrt{5}\)2=36-5=31). Use \(a^2-b^2\) in such questions.

Step 3

Exam Tip

संयुग्मी गुणन से ((6)2-\(\sqrt{5}\)2=36-5=31) मिलता है। ऐसे प्रश्नों में \(a^2-b^2\) प्रयोग करें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(u=6+\sqrt{5}\) और \(v=6-\sqrt{5}\) हैं तो (uv) का मान क्या है? / If \(u=6+\sqrt{5}\) and \(v=6-\sqrt{5}\), what is the value of (uv)?

Correct Answer: A. (31). Explanation: संयुग्मी गुणन से ((6)2-\(\sqrt{5}\)2=36-5=31) मिलता है। ऐसे प्रश्नों में \(a^2-b^2\) प्रयोग करें। / Conjugate multiplication gives ((6)2-\(\sqrt{5}\)2=36-5=31). Use \(a^2-b^2\) in such questions.

Which concept should I revise for this Mathematics MCQ?

Conjugate multiplication gives ((6)2-\(\sqrt{5}\)2=36-5=31). Use \(a^2-b^2\) in such questions.

What exam hint can help solve this Mathematics question?

संयुग्मी गुणन से ((6)2-\(\sqrt{5}\)2=36-5=31) मिलता है। ऐसे प्रश्नों में \(a^2-b^2\) प्रयोग करें।

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