\(2x^2+mx+10\) का गुणनखंड रूप ((2x+5)(x+2)) है। (m) क्या होगा?

The factorised form of \(2x^2+mx+10\) is ((2x+5)(x+2)). What is (m)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (9)correct middle coefficient

Step 1

Concept

The cross terms are (4x) and (5x), whose sum is (9x). In exams add both cross terms.

Step 2

Why this answer is correct

The correct answer is C. (9) / correct middle coefficient. The cross terms are (4x) and (5x), whose sum is (9x). In exams add both cross terms.

Step 3

Exam Tip

क्रॉस पद (4x) और (5x) हैं, जिनका योग (9x) है। परीक्षा में दोनों क्रॉस पद जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

\(2x^2+mx+10\) का गुणनखंड रूप ((2x+5)(x+2)) है। (m) क्या होगा? / The factorised form of \(2x^2+mx+10\) is ((2x+5)(x+2)). What is (m)?

Correct Answer: C. (9) / correct middle coefficient. Explanation: क्रॉस पद (4x) और (5x) हैं, जिनका योग (9x) है। परीक्षा में दोनों क्रॉस पद जोड़ें। / The cross terms are (4x) and (5x), whose sum is (9x). In exams add both cross terms.

Which concept should I revise for this Mathematics MCQ?

The cross terms are (4x) and (5x), whose sum is (9x). In exams add both cross terms.

What exam hint can help solve this Mathematics question?

क्रॉस पद (4x) और (5x) हैं, जिनका योग (9x) है। परीक्षा में दोनों क्रॉस पद जोड़ें।