समीकरण \(x^2+6x+9=0\) के मूल कौन से हैं?
What are the roots of \(x^2+6x+9=0\)?
Explanation opens after your attempt
B. (-3) और (-3)(-3) and (-3)
Concept
(x-2+6x+9=(x+3)2) so both roots are (-3). In a perfect square the root sign is opposite.
Why this answer is correct
The correct answer is B. (-3) और (-3) / (-3) and (-3). (x-2+6x+9=(x+3)2) so both roots are (-3). In a perfect square the root sign is opposite.
Exam Tip
(x-2+6x+9=(x+3)2) इसलिए दोनों मूल (-3) हैं। पूर्ण वर्ग में मूल का चिन्ह उल्टा होता है।
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