समीकरण \(x^2-8x-9=0\) के मूलों का अंतर कितना है?
What is the difference between the roots of \(x^2-8x-9=0\)?
Explanation opens after your attempt
A. (10)
Concept
(x-2-8x-9=(x-9)(x+1)). The roots are (9) and (-1), so the difference is (10).
Why this answer is correct
The correct answer is A. (10). (x-2-8x-9=(x-9)(x+1)). The roots are (9) and (-1), so the difference is (10).
Exam Tip
(x-2-8x-9=(x-9)(x+1)) है। मूल (9) और (-1) हैं इसलिए अंतर (10) है।
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