\(2x^2+kx+12\) में यदि गुणनखंड ((2x+3)(x+4)) हैं, तो (k) क्या होगा?
In \(2x^2+kx+12\), if the factors are ((2x+3)(x+4)), what is (k)?
Explanation opens after your attempt
B. (11)
Concept
Expansion gives \(2x^2+8x+3x+12=2x^2+11x+12\). In exams, add the cross terms.
Why this answer is correct
The correct answer is B. (11). Expansion gives \(2x^2+8x+3x+12=2x^2+11x+12\). In exams, add the cross terms.
Exam Tip
विस्तार से \(2x^2+8x+3x+12=2x^2+11x+12\) मिलता है। परीक्षा में क्रॉस पद जोड़ें।
Login to save your score, XP, coins and progress.
