\(7x^2-14x+19=0\) में पूर्ण वर्ग रूप कौनसा सही है?
Which completed square form is correct for \(7x^2-14x+19=0\)?
Explanation opens after your attempt
Correct Answer
A. (7(x-1)2+12=0)
Concept
(7x-2-14x+19=7(x-1)2+12), so it cannot be zero for real (x). In exams, completed square form also shows the nature of roots.
Why this answer is correct
The correct answer is A. (7(x-1)2+12=0). (7x-2-14x+19=7(x-1)2+12), so it cannot be zero for real (x). In exams, completed square form also shows the nature of roots.
Exam Tip
(7x-2-14x+19=7(x-1)2+12), इसलिए यह वास्तविक (x) के लिए शून्य नहीं हो सकता। परीक्षा में पूर्ण वर्ग रूप से भी मूलों की प्रकृति दिखती है।
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