\(x^2+6x+9\) और \(x^2+9\) में मुख्य अंतर क्या है?
What is the main difference between \(x^2+6x+9\) and \(x^2+9\)?
Explanation opens after your attempt
A. पहली में मध्य पद (6x) हैThe first has middle term (6x)
Concept
\(x^2+6x+9\) is a perfect square, but \(x^2+9\) lacks the middle term. Exam tip: check whether the middle term is present.
Why this answer is correct
The correct answer is A. पहली में मध्य पद (6x) है / The first has middle term (6x). \(x^2+6x+9\) is a perfect square, but \(x^2+9\) lacks the middle term. Exam tip: check whether the middle term is present.
Exam Tip
\(x^2+6x+9\) पूर्ण वर्ग है लेकिन \(x^2+9\) में मध्य पद नहीं है। परीक्षा में मध्य पद की उपस्थिति जांचें।
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