कौन-सा द्विघात व्यंजक पूर्ण वर्ग नहीं है?
Which quadratic expression is not a perfect square?
Explanation opens after your attempt
Correct Answer
D. \(x^2+8x+18\)
Concept
For \(x^2+8x+18\), the constant should be (16) for a perfect square. In exams, check the square of half the middle coefficient.
Why this answer is correct
The correct answer is D. \(x^2+8x+18\). For \(x^2+8x+18\), the constant should be (16) for a perfect square. In exams, check the square of half the middle coefficient.
Exam Tip
\(x^2+8x+18\) में पूर्ण वर्ग के लिए स्थिर पद (16) चाहिए था। परीक्षा में आधे मध्य गुणांक का वर्ग जाँचें।
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