यदि \(\alpha\) और \(\beta\) समीकरण \(2x^2-7x+3=0\) के मूल हैं तो \(\alpha+\beta-\alpha\beta\) का मान क्या है?
If \(\alpha\) and \(\beta\) are roots of \(2x^2-7x+3=0\), what is the value of \(\alpha+\beta-\alpha\beta\)?
Explanation opens after your attempt
Correct Answer
A. (2)
Concept
Here \(\alpha+\beta=\frac{7}{2}\) and \(\alpha\beta=\frac{3}{2}\). Therefore \(\alpha+\beta-\alpha\beta=\frac{7}{2}-\frac{3}{2}=2\).
Why this answer is correct
The correct answer is A. (2). Here \(\alpha+\beta=\frac{7}{2}\) and \(\alpha\beta=\frac{3}{2}\). Therefore \(\alpha+\beta-\alpha\beta=\frac{7}{2}-\frac{3}{2}=2\).
Exam Tip
यहां \(\alpha+\beta=\frac{7}{2}\) और \(\alpha\beta=\frac{3}{2}\) है। इसलिए \(\alpha+\beta-\alpha\beta=\frac{7}{2}-\frac{3}{2}=2\) होगा।
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