यदि \(x^2-9x+q=0\) का एक मूल (4) है, तो (q) का मान क्या होगा?
If one root of \(x^2-9x+q=0\) is (4), what is the value of (q)?
Explanation opens after your attempt
Correct Answer
A. (20)
Concept
The other root is (5), so \(q=4\times5=20\). In exams, (c) equals the product of roots when (a=1).
Why this answer is correct
The correct answer is A. (20). The other root is (5), so \(q=4\times5=20\). In exams, (c) equals the product of roots when (a=1).
Exam Tip
दूसरा मूल (5) है, इसलिए \(q=4\times5=20\) होगा। परीक्षा में (c) मूलों के गुणनफल के बराबर होता है जब (a=1)।
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