\( x^2+18x+81 \) का वर्ग रूप कौन सा है?

Which square form represents \( x^2+18x+81 \)?

Explanation opens after your attempt
Correct Answer

A. ( (x+9)2 )

Step 1

Concept

\(81=9^2\) and the middle term \(18x=2\times x\times9\). Exam tip: identify the number from the last term.

Step 2

Why this answer is correct

The correct answer is A. ( (x+9)2 ). \(81=9^2\) and the middle term \(18x=2\times x\times9\). Exam tip: identify the number from the last term.

Step 3

Exam Tip

\(81=9^2\) और बीच का पद \(18x=2\times x\times9\) है। परीक्षा में अंतिम पद से संख्या पहचानें।

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Mathematics Answer, Explanation and Revision Hints

\( x^2+18x+81 \) का वर्ग रूप कौन सा है? / Which square form represents \( x^2+18x+81 \)?

Correct Answer: A. ( (x+9)2 ). Explanation: \(81=9^2\) और बीच का पद \(18x=2\times x\times9\) है। परीक्षा में अंतिम पद से संख्या पहचानें। / \(81=9^2\) and the middle term \(18x=2\times x\times9\). Exam tip: identify the number from the last term.

Which concept should I revise for this Mathematics MCQ?

\(81=9^2\) and the middle term \(18x=2\times x\times9\). Exam tip: identify the number from the last term.

What exam hint can help solve this Mathematics question?

\(81=9^2\) और बीच का पद \(18x=2\times x\times9\) है। परीक्षा में अंतिम पद से संख्या पहचानें।

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