समीकरण \(2x^2+9x+4=0\) के मूल कौन से हैं?
What are the roots of \(2x^2+9x+4=0\)?
Explanation opens after your attempt
A. (-4) और \(-\frac{1}{2}\)(-4) and \(-\frac{1}{2}\)
Concept
(2x-2+9x+4=(2x+1)(x+4)). Therefore the roots are \(-\frac{1}{2}\) and (-4).
Why this answer is correct
The correct answer is A. (-4) और \(-\frac{1}{2}\) / (-4) and \(-\frac{1}{2}\). (2x-2+9x+4=(2x+1)(x+4)). Therefore the roots are \(-\frac{1}{2}\) and (-4).
Exam Tip
(2x-2+9x+4=(2x+1)(x+4)) है। इसलिए मूल \(-\frac{1}{2}\) और (-4) हैं।
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