\(\sqrt{10+\sqrt{21}}\) के बारे में कौन-सा कथन निश्चित रूप से सही है?
Which statement is definitely true about \(\sqrt{10+\sqrt{21}}\)?
Explanation opens after your attempt
B. इसका वर्ग \(10+\sqrt{21}\) हैIts square is \(10+\sqrt{21}\)
Concept
Since \(10+\sqrt{21}\) is positive, its square root is real. Squaring it gives the inside number.
Why this answer is correct
The correct answer is B. इसका वर्ग \(10+\sqrt{21}\) है / Its square is \(10+\sqrt{21}\). Since \(10+\sqrt{21}\) is positive, its square root is real. Squaring it gives the inside number.
Exam Tip
क्योंकि \(10+\sqrt{21}\) धनात्मक है, इसका वर्गमूल वास्तविक है। वर्ग करने पर अंदर की संख्या मिलती है।
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