\(x^2+6x+5\) को पूर्ण वर्ग पूरा करने के लिए कौन-सा पद जोड़ना होगा?
Which term must be added to complete the square for \(x^2+6x+5\)?
Explanation opens after your attempt
B. (4)
Concept
To make \(x^2+6x\) a perfect square, (9) is needed, and (5) is already present, so add (4). In exams, square half the middle coefficient.
Why this answer is correct
The correct answer is B. (4). To make \(x^2+6x\) a perfect square, (9) is needed, and (5) is already present, so add (4). In exams, square half the middle coefficient.
Exam Tip
\(x^2+6x\) को पूर्ण वर्ग बनाने के लिए (9) चाहिए और (5) पहले है, इसलिए (4) जोड़ना होगा। परीक्षा में आधे मध्य गुणांक का वर्ग लें।
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