यदि \(x=\sqrt{5}+\sqrt{20}+\sqrt{45}\) है, तो \(x^2\) का मान क्या है?

If \(x=\sqrt{5}+\sqrt{20}+\sqrt{45}\), what is the value of \(x^2\)?

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

B. (180)

Step 1

Concept

\(\sqrt{20}=2\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\), so \(x=6\sqrt{5}\). Its square is (180).

Step 2

Why this answer is correct

The correct answer is B. (180). \(\sqrt{20}=2\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\), so \(x=6\sqrt{5}\). Its square is (180).

Step 3

Exam Tip

\(\sqrt{20}=2\sqrt{5}\) और \(\sqrt{45}=3\sqrt{5}\), इसलिए \(x=6\sqrt{5}\) है। इसका वर्ग (180) है।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(x=\sqrt{5}+\sqrt{20}+\sqrt{45}\) है, तो \(x^2\) का मान क्या है? / If \(x=\sqrt{5}+\sqrt{20}+\sqrt{45}\), what is the value of \(x^2\)?

Correct Answer: B. (180). Explanation: \(\sqrt{20}=2\sqrt{5}\) और \(\sqrt{45}=3\sqrt{5}\), इसलिए \(x=6\sqrt{5}\) है। इसका वर्ग (180) है। / \(\sqrt{20}=2\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\), so \(x=6\sqrt{5}\). Its square is (180).

Which concept should I revise for this Mathematics MCQ?

\(\sqrt{20}=2\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\), so \(x=6\sqrt{5}\). Its square is (180).

What exam hint can help solve this Mathematics question?

\(\sqrt{20}=2\sqrt{5}\) और \(\sqrt{45}=3\sqrt{5}\), इसलिए \(x=6\sqrt{5}\) है। इसका वर्ग (180) है।