समीकरण \(x^2-13x+42=0\) के मूलों का योग क्या है?
What is the sum of roots of \(x^2-13x+42=0\)?
Explanation opens after your attempt
Correct Answer
A. (13)
Concept
The sum of roots is \(-\frac{b}{a}\). Here (b=-13), so the sum is (13).
Why this answer is correct
The correct answer is A. (13). The sum of roots is \(-\frac{b}{a}\). Here (b=-13), so the sum is (13).
Exam Tip
मूलों का योग \(-\frac{b}{a}\) है। यहां (b=-13) इसलिए योग (13) है।
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