यदि \(a=\sqrt{2}+1\) और \(b=\sqrt{2}-1\) हैं तो (ab) क्या है?
If \(a=\sqrt{2}+1\) and \(b=\sqrt{2}-1\), what is (ab)?
Explanation opens after your attempt
A. (1)
Concept
(ab=\(\sqrt{2}\)2-12=1). The product of conjugate forms gives a rational result.
Why this answer is correct
The correct answer is A. (1). (ab=\(\sqrt{2}\)2-12=1). The product of conjugate forms gives a rational result.
Exam Tip
(ab=\(\sqrt{2}\)2-12=1) है। संयुग्मी रूप का गुणनफल परिमेय देता है।
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