यदि (p(x)=x-2-4x-1), तो इसके शून्यक कौन से हैं?
If (p(x)=x-2-4x-1), what are its zeroes?
Explanation opens after your attempt
Correct Answer
A. \(2+\sqrt{5}\) और \(2-\sqrt{5}\)\(2+\sqrt{5}\) and \(2-\sqrt{5}\)
Concept
Using the quadratic formula, \(x=\frac{4\pm\sqrt{16+4}}{2}=2\pm\sqrt{5}\). In exams simplify the discriminant.
Why this answer is correct
The correct answer is A. \(2+\sqrt{5}\) और \(2-\sqrt{5}\) / \(2+\sqrt{5}\) and \(2-\sqrt{5}\). Using the quadratic formula, \(x=\frac{4\pm\sqrt{16+4}}{2}=2\pm\sqrt{5}\). In exams simplify the discriminant.
Exam Tip
द्विघात सूत्र से \(x=\frac{4\pm\sqrt{16+4}}{2}=2\pm\sqrt{5}\) मिलता है। परीक्षा में विविक्तकर को सरल करें।
Login to save your score, XP, coins and progress.