\( \sqrt{500}-\sqrt{180}+\sqrt{45} \) का सरल रूप क्या है?
What is the simplified form of \( \sqrt{500}-\sqrt{180}+\sqrt{45} \)?
Explanation opens after your attempt
A. \(7\sqrt{5}\)
Concept
\( \sqrt{500}=10\sqrt{5} \), \( \sqrt{180}=6\sqrt{5} \), and \( \sqrt{45}=3\sqrt{5} \). Therefore \(10\sqrt{5}-6\sqrt{5}+3\sqrt{5}=7\sqrt{5}\).
Why this answer is correct
The correct answer is A. \(7\sqrt{5}\). \( \sqrt{500}=10\sqrt{5} \), \( \sqrt{180}=6\sqrt{5} \), and \( \sqrt{45}=3\sqrt{5} \). Therefore \(10\sqrt{5}-6\sqrt{5}+3\sqrt{5}=7\sqrt{5}\).
Exam Tip
\( \sqrt{500}=10\sqrt{5} \), \( \sqrt{180}=6\sqrt{5} \), और \( \sqrt{45}=3\sqrt{5} \)। इसलिए \(10\sqrt{5}-6\sqrt{5}+3\sqrt{5}=7\sqrt{5}\) है।
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