यदि \(2x^2+kx-15\) में (x=3) रखने पर मान (0) मिलता है, तो (k) क्या होगा?
If substituting (x=3) in \(2x^2+kx-15\) gives (0), what is (k)?
Explanation opens after your attempt
A. (-1)
Concept
From (2(3)2+3k-15=0), (18+3k-15=0). Hence (3k=-3) and (k=-1).
Why this answer is correct
The correct answer is A. (-1). From (2(3)2+3k-15=0), (18+3k-15=0). Hence (3k=-3) and (k=-1).
Exam Tip
(2(3)2+3k-15=0) से (18+3k-15=0)। इसलिए (3k=-3) और (k=-1)।
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