यदि (p(x)=4x+a) और (q(x)=x-6), तो (p(x)+q(x)) का शून्यक (2) होने पर (a) क्या है?
If (p(x)=4x+a) and (q(x)=x-6), what is (a) if the zero of (p(x)+q(x)) is (2)?
Explanation opens after your attempt
A. (-4)
Concept
(p(x)+q(x)=5x+a-6). Substituting (x=2) gives (10+a-6=0), so (a=-4).
Why this answer is correct
The correct answer is A. (-4). (p(x)+q(x)=5x+a-6). Substituting (x=2) gives (10+a-6=0), so (a=-4).
Exam Tip
(p(x)+q(x)=5x+a-6) है। (x=2) रखने पर (10+a-6=0) से (a=-4) मिलता है।
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