यदि \(A=\sqrt{28}+\sqrt{63}\) और \(B=5\sqrt{7}\) हैं, तो कौन-सा कथन सही है?
If \(A=\sqrt{28}+\sqrt{63}\) and \(B=5\sqrt{7}\), which statement is correct?
Explanation opens after your attempt
Correct Answer
A. (A=B)
Concept
\(\sqrt{28}=2\sqrt{7}\) and \(\sqrt{63}=3\sqrt{7}\), so \(A=5\sqrt{7}\). Hence (A=B).
Why this answer is correct
The correct answer is A. (A=B). \(\sqrt{28}=2\sqrt{7}\) and \(\sqrt{63}=3\sqrt{7}\), so \(A=5\sqrt{7}\). Hence (A=B).
Exam Tip
\(\sqrt{28}=2\sqrt{7}\) और \(\sqrt{63}=3\sqrt{7}\), इसलिए \(A=5\sqrt{7}\) है। अतः (A=B) है।
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