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)?
Explanation opens after your attempt
A. (-4)
Concept
(ab=\(\sqrt{5}\)2-32=5-9=-4). A conjugate product can be rational.
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.
Exam Tip
(ab=\(\sqrt{5}\)2-32=5-9=-4) है। संयुग्मी गुणनफल परिमेय हो सकता है।
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