यदि \(a=\sqrt{3}+\sqrt{5}\) और \(b=\sqrt{5}-\sqrt{3}\) हैं, तो (ab) का मान क्या है?

If \(a=\sqrt{3}+\sqrt{5}\) and \(b=\sqrt{5}-\sqrt{3}\), what is the value of (ab)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. (2)

Step 1

Concept

After rearranging (ab=\(\sqrt{5}+\sqrt{3}\)\(\sqrt{5}-\sqrt{3}\)=5-3=2). Identify the conjugate form.

Step 2

Why this answer is correct

The correct answer is A. (2). After rearranging (ab=\(\sqrt{5}+\sqrt{3}\)\(\sqrt{5}-\sqrt{3}\)=5-3=2). Identify the conjugate form.

Step 3

Exam Tip

क्रम बदलने पर (ab=\(\sqrt{5}+\sqrt{3}\)\(\sqrt{5}-\sqrt{3}\)=5-3=2) है। संयुग्मी रूप पहचानें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a=\sqrt{3}+\sqrt{5}\) और \(b=\sqrt{5}-\sqrt{3}\) हैं, तो (ab) का मान क्या है? / If \(a=\sqrt{3}+\sqrt{5}\) and \(b=\sqrt{5}-\sqrt{3}\), what is the value of (ab)?

Correct Answer: A. (2). Explanation: क्रम बदलने पर (ab=\(\sqrt{5}+\sqrt{3}\)\(\sqrt{5}-\sqrt{3}\)=5-3=2) है। संयुग्मी रूप पहचानें। / After rearranging (ab=\(\sqrt{5}+\sqrt{3}\)\(\sqrt{5}-\sqrt{3}\)=5-3=2). Identify the conjugate form.

Which concept should I revise for this Mathematics MCQ?

After rearranging (ab=\(\sqrt{5}+\sqrt{3}\)\(\sqrt{5}-\sqrt{3}\)=5-3=2). Identify the conjugate form.

What exam hint can help solve this Mathematics question?

क्रम बदलने पर (ab=\(\sqrt{5}+\sqrt{3}\)\(\sqrt{5}-\sqrt{3}\)=5-3=2) है। संयुग्मी रूप पहचानें।