यदि \(x^2+px+q=0\) की जड़ें (-4) और (9) हैं, तो (p-q) का मान क्या है?
If the roots of \(x^2+px+q=0\) are (-4) and (9), what is the value of (p-q)?
Explanation opens after your attempt
A. (31)
Concept
The sum of roots is (5), so (p=-5). The product is (-36), so (q=-36), hence (p-q=31).
Why this answer is correct
The correct answer is A. (31). The sum of roots is (5), so (p=-5). The product is (-36), so (q=-36), hence (p-q=31).
Exam Tip
जड़ों का योग (5) है, इसलिए (p=-5)। गुणनफल (-36) है, इसलिए (q=-36), अतः (p-q=31)।
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