( (3a-2)(3a+8) ) में (a) का गुणांक क्या है?
What is the coefficient of (a) in ( (3a-2)(3a+8) )?
Explanation opens after your attempt
A. (18)
Concept
The cross terms are \(3a\cdot8=24a\) and \(-2\cdot3a=-6a\). Total is (18a).
Why this answer is correct
The correct answer is A. (18). The cross terms are \(3a\cdot8=24a\) and \(-2\cdot3a=-6a\). Total is (18a).
Exam Tip
क्रॉस पद \(3a\cdot8=24a\) और \(-2\cdot3a=-6a\) हैं। कुल (18a) है।
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