( (2x+1)(2x+7) ) में (x) का गुणांक क्या है?
What is the coefficient of (x) in ( (2x+1)(2x+7) )?
Explanation opens after your attempt
A. (16)
Concept
The cross terms are \(2x\cdot7=14x\) and \(1\cdot2x=2x\). Total is (16x).
Why this answer is correct
The correct answer is A. (16). The cross terms are \(2x\cdot7=14x\) and \(1\cdot2x=2x\). Total is (16x).
Exam Tip
क्रॉस पद \(2x\cdot7=14x\) और \(1\cdot2x=2x\) हैं। कुल (16x) है।
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