समीकरण \(9x^2-25=0\) के मूल क्या हैं?
What are the roots of \(9x^2-25=0\)?
Explanation opens after your attempt
Correct Answer
A. \(x=\pm \frac{5}{3}\)
Concept
\(9x^2=25\), so \(x^2=\frac{25}{9}\) and \(x=\pm \frac{5}{3}\). Take both signs while taking square roots.
Why this answer is correct
The correct answer is A. \(x=\pm \frac{5}{3}\). \(9x^2=25\), so \(x^2=\frac{25}{9}\) and \(x=\pm \frac{5}{3}\). Take both signs while taking square roots.
Exam Tip
\(9x^2=25\), इसलिए \(x^2=\frac{25}{9}\) और \(x=\pm \frac{5}{3}\)। वर्गमूल लेते समय दोनों चिन्ह लें।
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