यदि \(x=\sqrt{5}+\sqrt{20}\) और \(y=\sqrt{45}\) हैं तो (x-y) क्या है?
If \(x=\sqrt{5}+\sqrt{20}\) and \(y=\sqrt{45}\), what is (x-y)?
Explanation opens after your attempt
A. (0)
Concept
\(x=\sqrt{5}+2\sqrt{5}=3\sqrt{5}\) and \(y=3\sqrt{5}\). Therefore (x-y=0).
Why this answer is correct
The correct answer is A. (0). \(x=\sqrt{5}+2\sqrt{5}=3\sqrt{5}\) and \(y=3\sqrt{5}\). Therefore (x-y=0).
Exam Tip
\(x=\sqrt{5}+2\sqrt{5}=3\sqrt{5}\) और \(y=3\sqrt{5}\) है। इसलिए (x-y=0) है।
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