\(3\sqrt{7}+2\sqrt{28}\) का सरल रूप क्या है?
What is the simplified form of \(3\sqrt{7}+2\sqrt{28}\)?
Explanation opens after your attempt
B. \(7\sqrt{7}\)
Concept
\(\sqrt{28}=2\sqrt{7}\), so \(3\sqrt{7}+4\sqrt{7}=7\sqrt{7}\). Watch both coefficients and radicals carefully.
Why this answer is correct
The correct answer is B. \(7\sqrt{7}\). \(\sqrt{28}=2\sqrt{7}\), so \(3\sqrt{7}+4\sqrt{7}=7\sqrt{7}\). Watch both coefficients and radicals carefully.
Exam Tip
\(\sqrt{28}=2\sqrt{7}\), इसलिए \(3\sqrt{7}+4\sqrt{7}=7\sqrt{7}\) है। गुणांक और मूल दोनों ध्यान से देखें।
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