यदि (p(x)=ax+b) का शून्यक (7) है और (a=-4), तो (b) क्या है?
If the zero of (p(x)=ax+b) is (7) and (a=-4), what is (b)?
Explanation opens after your attempt
C. (28)
Concept
From (p(7)=0), (7a+b=0). Substituting (a=-4) gives (b=28).
Why this answer is correct
The correct answer is C. (28). From (p(7)=0), (7a+b=0). Substituting (a=-4) gives (b=28).
Exam Tip
(p(7)=0) से (7a+b=0) होगा। (a=-4) रखने पर (b=28) मिलता है।
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