\(x^2-8x+k\) को पूर्ण वर्ग बनाने के लिए (k) क्या होगा?
What is (k) to make \(x^2-8x+k\) a perfect square?
Explanation opens after your attempt
C. (16)
Concept
Half of (-8) is (-4), and ((-4)2=16). Exam tip: the square of half the coefficient is positive.
Why this answer is correct
The correct answer is C. (16). Half of (-8) is (-4), and ((-4)2=16). Exam tip: the square of half the coefficient is positive.
Exam Tip
(-8) का आधा (-4) है और ((-4)2=16) है। परीक्षा में आधे गुणांक का वर्ग हमेशा धनात्मक होता है।
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