समीकरण \(x^2-4x-5=0\) के मूलों का अंतर कितना है?
What is the difference between the roots of \(x^2-4x-5=0\)?
Explanation opens after your attempt
A. (6)
Concept
(x-2-4x-5=(x-5)(x+1)). The roots are (5) and (-1), so the difference is (6).
Why this answer is correct
The correct answer is A. (6). (x-2-4x-5=(x-5)(x+1)). The roots are (5) and (-1), so the difference is (6).
Exam Tip
(x-2-4x-5=(x-5)(x+1)) है। मूल (5) और (-1) हैं इसलिए अंतर (6) है।
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