यदि \(x^2+vx+28=0\) के मूल (-4) और (-7) हैं, तो (v) का मान क्या है?
If the roots of \(x^2+vx+28=0\) are (-4) and (-7), what is the value of (v)?
Explanation opens after your attempt
A. (11)
Concept
The sum of roots is (-11), and in \(x^2+vx+28=0\), the sum is (-v). Therefore (v=11).
Why this answer is correct
The correct answer is A. (11). The sum of roots is (-11), and in \(x^2+vx+28=0\), the sum is (-v). Therefore (v=11).
Exam Tip
मूलों का योग (-11) है और \(x^2+vx+28=0\) में योग (-v) होता है। इसलिए (v=11) है।
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