\(2x^2+kx+12\) 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)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (11)

Step 1

Concept

Expansion gives \(2x^2+8x+3x+12=2x^2+11x+12\). In exams, add the cross terms.

Step 2

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.

Step 3

Exam Tip

विस्तार से \(2x^2+8x+3x+12=2x^2+11x+12\) मिलता है। परीक्षा में क्रॉस पद जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

\(2x^2+kx+12\) 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)?

Correct Answer: B. (11). Explanation: विस्तार से \(2x^2+8x+3x+12=2x^2+11x+12\) मिलता है। परीक्षा में क्रॉस पद जोड़ें। / Expansion gives \(2x^2+8x+3x+12=2x^2+11x+12\). In exams, add the cross terms.

Which concept should I revise for this Mathematics MCQ?

Expansion gives \(2x^2+8x+3x+12=2x^2+11x+12\). In exams, add the cross terms.

What exam hint can help solve this Mathematics question?

विस्तार से \(2x^2+8x+3x+12=2x^2+11x+12\) मिलता है। परीक्षा में क्रॉस पद जोड़ें।