किस विकल्प में मूलों का योग धनात्मक और गुणनफल ऋणात्मक होगा?
In which option will the sum of roots be positive and the product of roots be negative?
Explanation opens after your attempt
Correct Answer
A. \(x^2-6x-16=0\)
Concept
In the first option, the sum is \(-\frac{b}{a}=6\) and the product is \(\frac{c}{a}=-16\). So the sum is positive and the product is negative.
Why this answer is correct
The correct answer is A. \(x^2-6x-16=0\). In the first option, the sum is \(-\frac{b}{a}=6\) and the product is \(\frac{c}{a}=-16\). So the sum is positive and the product is negative.
Exam Tip
पहले विकल्प में योग \(-\frac{b}{a}=6\) और गुणनफल \(\frac{c}{a}=-16\) है। इसलिए योग धनात्मक और गुणनफल ऋणात्मक है।
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