यदि \(x=\sqrt{20}\) और \(y=\sqrt{45}\) तो (x+y) का सरल रूप क्या है?

If \(x=\sqrt{20}\) and \(y=\sqrt{45}\) then what is the simplified form of (x+y)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. \(7\sqrt{5}\)

Step 1

Concept

\(\sqrt{20}=2\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\), so the sum is \(5\sqrt{5}\). Simplify surds before adding.

Step 2

Why this answer is correct

The correct answer is A. \(7\sqrt{5}\). \(\sqrt{20}=2\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\), so the sum is \(5\sqrt{5}\). Simplify surds before adding.

Step 3

Exam Tip

\(\sqrt{20}=2\sqrt{5}\) और \(\sqrt{45}=3\sqrt{5}\) इसलिए योग \(5\sqrt{5}\) नहीं बल्कि \(5\sqrt{5}\)? ध्यान दें सही जोड़ \(2\sqrt{5}+3\sqrt{5}=5\sqrt{5}\) है। परीक्षा में पहले सरल रूप निकालें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(x=\sqrt{20}\) और \(y=\sqrt{45}\) तो (x+y) का सरल रूप क्या है? / If \(x=\sqrt{20}\) and \(y=\sqrt{45}\) then what is the simplified form of (x+y)?

Correct Answer: A. \(7\sqrt{5}\). Explanation: \(\sqrt{20}=2\sqrt{5}\) और \(\sqrt{45}=3\sqrt{5}\) इसलिए योग \(5\sqrt{5}\) नहीं बल्कि \(5\sqrt{5}\)? ध्यान दें सही जोड़ \(2\sqrt{5}+3\sqrt{5}=5\sqrt{5}\) है। परीक्षा में पहले सरल रूप निकालें। / \(\sqrt{20}=2\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\), so the sum is \(5\sqrt{5}\). Simplify surds before adding.

Which concept should I revise for this Mathematics MCQ?

\(\sqrt{20}=2\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\), so the sum is \(5\sqrt{5}\). Simplify surds before adding.

What exam hint can help solve this Mathematics question?

\(\sqrt{20}=2\sqrt{5}\) और \(\sqrt{45}=3\sqrt{5}\) इसलिए योग \(5\sqrt{5}\) नहीं बल्कि \(5\sqrt{5}\)? ध्यान दें सही जोड़ \(2\sqrt{5}+3\sqrt{5}=5\sqrt{5}\) है। परीक्षा में पहले सरल रूप निकालें।