( (2x-3)(2x+9) ) में (x) का गुणांक क्या होगा?

What will be the coefficient of (x) in ( (2x-3)(2x+9) )?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. (12)

Step 1

Concept

The cross terms are \(2x\cdot9=18x\) and \(-3\cdot2x=-6x\). Total is (12x).

Step 2

Why this answer is correct

The correct answer is A. (12). The cross terms are \(2x\cdot9=18x\) and \(-3\cdot2x=-6x\). Total is (12x).

Step 3

Exam Tip

क्रॉस पद \(2x\cdot9=18x\) और \(-3\cdot2x=-6x\) हैं। कुल (12x) है।

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( (2x-3)(2x+9) ) में (x) का गुणांक क्या होगा? / What will be the coefficient of (x) in ( (2x-3)(2x+9) )?

Correct Answer: A. (12). Explanation: क्रॉस पद \(2x\cdot9=18x\) और \(-3\cdot2x=-6x\) हैं। कुल (12x) है। / The cross terms are \(2x\cdot9=18x\) and \(-3\cdot2x=-6x\). Total is (12x).

Which concept should I revise for this Mathematics MCQ?

The cross terms are \(2x\cdot9=18x\) and \(-3\cdot2x=-6x\). Total is (12x).

What exam hint can help solve this Mathematics question?

क्रॉस पद \(2x\cdot9=18x\) और \(-3\cdot2x=-6x\) हैं। कुल (12x) है।