यदि \(\sqrt{x}=9\) तो (x) क्या है?

If \(\sqrt{x}=9\) then what is (x)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. 81

Step 1

Concept

Squaring both sides gives (x=81). Square both sides when needed.

Step 2

Why this answer is correct

The correct answer is B. 81. Squaring both sides gives (x=81). Square both sides when needed.

Step 3

Exam Tip

दोनों पक्षों का वर्ग करने पर (x=81)। वर्गमूल के प्रश्नों में वर्ग करें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(\sqrt{x}=9\) तो (x) क्या है? / If \(\sqrt{x}=9\) then what is (x)?

Correct Answer: B. 81. Explanation: दोनों पक्षों का वर्ग करने पर (x=81)। वर्गमूल के प्रश्नों में वर्ग करें। / Squaring both sides gives (x=81). Square both sides when needed.

Which concept should I revise for this Mathematics MCQ?

Squaring both sides gives (x=81). Square both sides when needed.

What exam hint can help solve this Mathematics question?

दोनों पक्षों का वर्ग करने पर (x=81)। वर्गमूल के प्रश्नों में वर्ग करें।