समीकरण \(5x^2-45=0\) के मूल कौन से हैं?
What are the roots of \(5x^2-45=0\)?
Explanation opens after your attempt
A. (3) और (-3)(3) and (-3)
Concept
From \(5x^2-45=0\), we get \(x^2=9\). Therefore \(x=\pm3\).
Why this answer is correct
The correct answer is A. (3) और (-3) / (3) and (-3). From \(5x^2-45=0\), we get \(x^2=9\). Therefore \(x=\pm3\).
Exam Tip
\(5x^2-45=0\) से \(x^2=9\) मिलता है। इसलिए \(x=\pm3\) है।
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