यदि \(2x^2+kx+18=0\) में मूलों का गुणनफल मूलों के योग का (-3) गुना है, तो (k) क्या होगा?
If in \(2x^2+kx+18=0\), the product of roots is (-3) times the sum of roots, what is (k)?
Explanation opens after your attempt
Correct Answer
A. (6)
Concept
The product is (9) and the sum is \(-\frac{k}{2}\). From (9=-3\left\(-\frac{k}{2}\right\)), we get (k=6).
Why this answer is correct
The correct answer is A. (6). The product is (9) and the sum is \(-\frac{k}{2}\). From (9=-3\left\(-\frac{k}{2}\right\)), we get (k=6).
Exam Tip
गुणनफल (9) और योग \(-\frac{k}{2}\) है। (9=-3\left\(-\frac{k}{2}\right\)) से (k=6) मिलता है।
Login to save your score, XP, coins and progress.