( (x+4)(x+9) ) में (x) का गुणांक क्या है?
What is the coefficient of (x) in ( (x+4)(x+9) )?
Explanation opens after your attempt
A. (13)
Concept
In ( (x+a)(x+b) ), the coefficient of (x) is (a+b). Here (4+9=13).
Why this answer is correct
The correct answer is A. (13). In ( (x+a)(x+b) ), the coefficient of (x) is (a+b). Here (4+9=13).
Exam Tip
( (x+a)(x+b) ) में (x) का गुणांक (a+b) होता है। यहाँ (4+9=13) है।
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