यदि \(a=\sqrt{5}\) और \(b=\sqrt{20}\) तो (a+b) क्या है?
If \(a=\sqrt{5}\) and \(b=\sqrt{20}\), what is (a+b)?
Explanation opens after your attempt
C. \(5\sqrt{5}\)
Concept
\(\sqrt{20}=2\sqrt{5}\). Then add like surds.
Why this answer is correct
The correct answer is C. \(5\sqrt{5}\). \(\sqrt{20}=2\sqrt{5}\). Then add like surds.
Exam Tip
\(\sqrt{20}=2\sqrt{5}\)। योग \(3\sqrt{5}\) होगा।
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