समीकरण \(x^2-2x-15=0\) के मूल कौन से हैं?
What are the roots of \(x^2-2x-15=0\)?
Explanation opens after your attempt
A. (5) और (-3)(5) and (-3)
Concept
(x-2-2x-15=(x-5)(x+3)). Therefore the roots are (5) and (-3).
Why this answer is correct
The correct answer is A. (5) और (-3) / (5) and (-3). (x-2-2x-15=(x-5)(x+3)). Therefore the roots are (5) and (-3).
Exam Tip
(x-2-2x-15=(x-5)(x+3)) है। इसलिए मूल (5) और (-3) हैं।
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