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)?
Explanation opens after your attempt
A. (2)
Concept
After rearranging (ab=\(\sqrt{5}+\sqrt{3}\)\(\sqrt{5}-\sqrt{3}\)=5-3=2). Identify the conjugate form.
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.
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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