यदि \(x^2+bx+c=0\) के मूल (-2) और (7) हैं, तो (b+c) का मान क्या है?
If the roots of \(x^2+bx+c=0\) are (-2) and (7), what is the value of (b+c)?
Explanation opens after your attempt
Correct Answer
A. (-19)
Concept
The sum of roots is (5), so (b=-5), and the product is (-14), so (c=-14). Therefore (b+c=-19).
Why this answer is correct
The correct answer is A. (-19). The sum of roots is (5), so (b=-5), and the product is (-14), so (c=-14). Therefore (b+c=-19).
Exam Tip
मूलों का योग (5) है, इसलिए (b=-5), और गुणनफल (-14) है, इसलिए (c=-14)। अतः (b+c=-19)।
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