यदि किसी मोनिक द्विघात समीकरण के दोनों मूल (7) और (7) हैं तो समीकरण कौन सा है?
If both roots of a monic quadratic equation are (7) and (7) then which equation is it?
Explanation opens after your attempt
Correct Answer
A. \(x^2-14x+49=0\)
Concept
With both roots (7) we get ((x-7)2=0) which is \(x^2-14x+49=0\). Form a perfect square from repeated roots.
Why this answer is correct
The correct answer is A. \(x^2-14x+49=0\). With both roots (7) we get ((x-7)2=0) which is \(x^2-14x+49=0\). Form a perfect square from repeated roots.
Exam Tip
दोनों मूल (7) होने पर ((x-7)2=0) मिलता है जो \(x^2-14x+49=0\) है। दोहराए मूल से पूर्ण वर्ग बनाएं।
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