\(4x^2-19x-5=0\) के मूल क्या हैं?
What are the roots of \(4x^2-19x-5=0\)?
Explanation opens after your attempt
A. \(x=5,-\frac{1}{4}\)
Concept
(4x-2-19x-5=(4x+1)(x-5)), so the roots are (5) and \(-\frac{1}{4}\). In exams, reverse the signs from linear factors to write roots.
Why this answer is correct
The correct answer is A. \(x=5,-\frac{1}{4}\). (4x-2-19x-5=(4x+1)(x-5)), so the roots are (5) and \(-\frac{1}{4}\). In exams, reverse the signs from linear factors to write roots.
Exam Tip
(4x-2-19x-5=(4x+1)(x-5)), इसलिए मूल (5) और \(-\frac{1}{4}\) हैं। परीक्षा में रैखिक गुणनखंडों के चिन्ह उलटकर मूल लिखें।
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