यदि \(x^2+mx+16\) पूर्ण वर्ग है और (m) ऋणात्मक है, तो (m) क्या होगा?
If \(x^2+mx+16\) is a perfect square and (m) is negative, what is (m)?
Explanation opens after your attempt
Correct Answer
A. (-8)
Concept
\(16=4^2\), and the negative middle term is \(-2\cdot x\cdot4=-8x\). In exams, choose the coefficient according to the given sign.
Why this answer is correct
The correct answer is A. (-8). \(16=4^2\), and the negative middle term is \(-2\cdot x\cdot4=-8x\). In exams, choose the coefficient according to the given sign.
Exam Tip
\(16=4^2\) है और ऋणात्मक मध्य पद \(-2\cdot x\cdot4=-8x\) होगा। परीक्षा में दिए गए चिन्ह के अनुसार गुणांक चुनें।
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