\(x^2-14x+c\) पूर्ण वर्ग हो, तो (c) का मान क्या होगा?
If \(x^2-14x+c\) is a perfect square, what will be the value of (c)?
Explanation opens after your attempt
A. (49)
Concept
Half of (-14) is (-7), and ((-7)2=49). In exams, even if the sign is negative, the square is positive.
Why this answer is correct
The correct answer is A. (49). Half of (-14) is (-7), and ((-7)2=49). In exams, even if the sign is negative, the square is positive.
Exam Tip
(-14) का आधा (-7) है और ((-7)2=49) है। परीक्षा में चिह्न चाहे ऋण हो, वर्ग धनात्मक होता है।
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