यदि (p(x)=7x+a) और (q(x)=4x-12), तो (p(x)+q(x)) का शून्यक (2) होने पर (a) क्या है?

If (p(x)=7x+a) and (q(x)=4x-12), what is (a) if the zero of (p(x)+q(x)) is (2)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. (-10)

Step 1

Concept

(p(x)+q(x)=11x+a-12). Substituting (x=2) gives (22+a-12=0), so (a=-10).

Step 2

Why this answer is correct

The correct answer is A. (-10). (p(x)+q(x)=11x+a-12). Substituting (x=2) gives (22+a-12=0), so (a=-10).

Step 3

Exam Tip

(p(x)+q(x)=11x+a-12) है। (x=2) रखने पर (22+a-12=0) से (a=-10) मिलता है।

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Mathematics Answer, Explanation and Revision Hints

यदि (p(x)=7x+a) और (q(x)=4x-12), तो (p(x)+q(x)) का शून्यक (2) होने पर (a) क्या है? / If (p(x)=7x+a) and (q(x)=4x-12), what is (a) if the zero of (p(x)+q(x)) is (2)?

Correct Answer: A. (-10). Explanation: (p(x)+q(x)=11x+a-12) है। (x=2) रखने पर (22+a-12=0) से (a=-10) मिलता है। / (p(x)+q(x)=11x+a-12). Substituting (x=2) gives (22+a-12=0), so (a=-10).

Which concept should I revise for this Mathematics MCQ?

(p(x)+q(x)=11x+a-12). Substituting (x=2) gives (22+a-12=0), so (a=-10).

What exam hint can help solve this Mathematics question?

(p(x)+q(x)=11x+a-12) है। (x=2) रखने पर (22+a-12=0) से (a=-10) मिलता है।