यदि \(a=\sqrt{13}-\sqrt{52}\), तो (a) का सरल रूप क्या है?
If \(a=\sqrt{13}-\sqrt{52}\), what is the simplified form of (a)?
Explanation opens after your attempt
Correct Answer
A. \(-\sqrt{13}\)
Concept
\(\sqrt{52}=2\sqrt{13}\).
Why this answer is correct
\(a=\sqrt{13}-2\sqrt{13}=-\sqrt{13}\), which is irrational.
Exam Tip
A negative sign does not change irrationality. चरण 1: \(\sqrt{52}=2\sqrt{13}\) है। चरण 2: \(a=\sqrt{13}-2\sqrt{13}=-\sqrt{13}\), जो अपरिमेय है। चरण 3: ऋण चिह्न आने पर भी अपरिमेयता नहीं बदलती।
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