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

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

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. (-4)

Step 1

Concept

(ab=\(\sqrt{5}\)2-32=5-9=-4). A conjugate product can be rational.

Step 2

Why this answer is correct

The correct answer is A. (-4). (ab=\(\sqrt{5}\)2-32=5-9=-4). A conjugate product can be rational.

Step 3

Exam Tip

(ab=\(\sqrt{5}\)2-32=5-9=-4) है। संयुग्मी गुणनफल परिमेय हो सकता है।

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Mathematics Answer, Explanation and Revision Hints

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

Correct Answer: A. (-4). Explanation: (ab=\(\sqrt{5}\)2-32=5-9=-4) है। संयुग्मी गुणनफल परिमेय हो सकता है। / (ab=\(\sqrt{5}\)2-32=5-9=-4). A conjugate product can be rational.

Which concept should I revise for this Mathematics MCQ?

(ab=\(\sqrt{5}\)2-32=5-9=-4). A conjugate product can be rational.

What exam hint can help solve this Mathematics question?

(ab=\(\sqrt{5}\)2-32=5-9=-4) है। संयुग्मी गुणनफल परिमेय हो सकता है।