\( x^2+18x+81 \) किसका पूर्ण वर्ग है?

\( x^2+18x+81 \) is the perfect square of what?

Explanation opens after your attempt
Correct Answer

B. ( (x+9)2 )सही रूप

Step 1

Concept

\(81=9^2\) and \(18x=2\cdot x\cdot9\). Exam tip: check the square root of the last term.

Step 2

Why this answer is correct

The correct answer is B. ( (x+9)2 ) / सही रूप. \(81=9^2\) and \(18x=2\cdot x\cdot9\). Exam tip: check the square root of the last term.

Step 3

Exam Tip

\(81=9^2\) और \(18x=2\cdot x\cdot9\) है। परीक्षा में अंतिम पद का वर्गमूल देखें।

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Mathematics Answer, Explanation and Revision Hints

\( x^2+18x+81 \) किसका पूर्ण वर्ग है? / \( x^2+18x+81 \) is the perfect square of what?

Correct Answer: B. ( (x+9)2 ) / सही रूप. Explanation: \(81=9^2\) और \(18x=2\cdot x\cdot9\) है। परीक्षा में अंतिम पद का वर्गमूल देखें। / \(81=9^2\) and \(18x=2\cdot x\cdot9\). Exam tip: check the square root of the last term.

Which concept should I revise for this Mathematics MCQ?

\(81=9^2\) and \(18x=2\cdot x\cdot9\). Exam tip: check the square root of the last term.

What exam hint can help solve this Mathematics question?

\(81=9^2\) और \(18x=2\cdot x\cdot9\) है। परीक्षा में अंतिम पद का वर्गमूल देखें।

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