समीकरण \(x^2-4x+1=0\) के मूल \(\alpha,\beta\) हैं। \(\alpha+\beta+\alpha\beta\) का मान क्या है?
The roots of \(x^2-4x+1=0\) are \(\alpha,\beta\). What is \(\alpha+\beta+\alpha\beta\)?
Explanation opens after your attempt
Correct Answer
A. (5)
Concept
The sum of roots is (4) and the product is (1). Therefore \(\alpha+\beta+\alpha\beta=5\).
Why this answer is correct
The correct answer is A. (5). The sum of roots is (4) and the product is (1). Therefore \(\alpha+\beta+\alpha\beta=5\).
Exam Tip
मूलों का योग (4) और गुणनफल (1) है। इसलिए \(\alpha+\beta+\alpha\beta=5\)।
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