समीकरण \(x^2+9x=0\) के मूल कौन-से हैं?
What are the roots of \(x^2+9x=0\)?
Explanation opens after your attempt
A. (0,-9)
Concept
(x-2+9x=x(x+9)), so the roots are (0) and (-9). Taking the common factor is a quick method.
Why this answer is correct
The correct answer is A. (0,-9). (x-2+9x=x(x+9)), so the roots are (0) and (-9). Taking the common factor is a quick method.
Exam Tip
(x-2+9x=x(x+9)), इसलिए मूल (0) और (-9) हैं। समान गुणनखंड निकालना जल्दी तरीका है।
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