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
Correct Answer

A. (31)

Step 1

Concept

The sum of roots is (5), so (p=-5). The product is (-36), so (q=-36), hence (p-q=31).

Step 2

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).

Step 3

Exam Tip

जड़ों का योग (5) है, इसलिए (p=-5)। गुणनफल (-36) है, इसलिए (q=-36), अतः (p-q=31)।

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Mathematics Answer, Explanation and Revision Hints

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)?

Correct Answer: A. (31). Explanation: जड़ों का योग (5) है, इसलिए (p=-5)। गुणनफल (-36) है, इसलिए (q=-36), अतः (p-q=31)। / The sum of roots is (5), so (p=-5). The product is (-36), so (q=-36), hence (p-q=31).

Which concept should I revise for this Mathematics MCQ?

The sum of roots is (5), so (p=-5). The product is (-36), so (q=-36), hence (p-q=31).

What exam hint can help solve this Mathematics question?

जड़ों का योग (5) है, इसलिए (p=-5)। गुणनफल (-36) है, इसलिए (q=-36), अतः (p-q=31)।