\(x^2-14x+49\) किस पूर्ण वर्ग के बराबर है?

Which perfect square equals \(x^2-14x+49\)?

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

D. ((x-7)2)

Step 1

Concept

Here \(49=7^2\) and \(-14x=-2\cdot7\cdot x\). Exam tip: identify ((x-7)2) from the negative middle term.

Step 2

Why this answer is correct

The correct answer is D. ((x-7)2). Here \(49=7^2\) and \(-14x=-2\cdot7\cdot x\). Exam tip: identify ((x-7)2) from the negative middle term.

Step 3

Exam Tip

\(49=7^2\) और \(-14x=-2\cdot7\cdot x\) है। परीक्षा में ऋणात्मक मध्य पद से ((x-7)2) पहचानें।

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Mathematics Answer, Explanation and Revision Hints

\(x^2-14x+49\) किस पूर्ण वर्ग के बराबर है? / Which perfect square equals \(x^2-14x+49\)?

Correct Answer: D. ((x-7)2). Explanation: \(49=7^2\) और \(-14x=-2\cdot7\cdot x\) है। परीक्षा में ऋणात्मक मध्य पद से ((x-7)2) पहचानें। / Here \(49=7^2\) and \(-14x=-2\cdot7\cdot x\). Exam tip: identify ((x-7)2) from the negative middle term.

Which concept should I revise for this Mathematics MCQ?

Here \(49=7^2\) and \(-14x=-2\cdot7\cdot x\). Exam tip: identify ((x-7)2) from the negative middle term.

What exam hint can help solve this Mathematics question?

\(49=7^2\) और \(-14x=-2\cdot7\cdot x\) है। परीक्षा में ऋणात्मक मध्य पद से ((x-7)2) पहचानें।