\(5x^2-10x-3=0\) के मूलों का सही रूप क्या है?
What is the correct form of the roots of \(5x^2-10x-3=0\)?
Explanation opens after your attempt
Correct Answer
A. \(x=1\pm\frac{2\sqrt{10}}{5}\)
Concept
The formula gives \(x=\frac{10\pm\sqrt{160}}{10}=1\pm\frac{2\sqrt{10}}{5}\). In exams, simplify \(\sqrt{160}=4\sqrt{10}\).
Why this answer is correct
The correct answer is A. \(x=1\pm\frac{2\sqrt{10}}{5}\). The formula gives \(x=\frac{10\pm\sqrt{160}}{10}=1\pm\frac{2\sqrt{10}}{5}\). In exams, simplify \(\sqrt{160}=4\sqrt{10}\).
Exam Tip
सूत्र से \(x=\frac{10\pm\sqrt{160}}{10}=1\pm\frac{2\sqrt{10}}{5}\) मिलता है। परीक्षा में \(\sqrt{160}=4\sqrt{10}\) सरल करें।
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