यदि (x=2) और (y=-4), तो \(3x^2-2xy+y\) का मान क्या होगा?

If (x=2) and (y=-4), what is the value of \(3x^2-2xy+y\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (24)

Step 1

Concept

Substitution gives (3(4)-2(2)(-4)-4=24). Keep signs carefully in two-variable questions.

Step 2

Why this answer is correct

The correct answer is C. (24). Substitution gives (3(4)-2(2)(-4)-4=24). Keep signs carefully in two-variable questions.

Step 3

Exam Tip

मान रखने पर (3(4)-2(2)(-4)-4=24) मिलता है। दो चर वाले प्रश्न में चिह्न ध्यान से रखें।

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Mathematics Answer, Explanation and Revision Hints

यदि (x=2) और (y=-4), तो \(3x^2-2xy+y\) का मान क्या होगा? / If (x=2) and (y=-4), what is the value of \(3x^2-2xy+y\)?

Correct Answer: C. (24). Explanation: मान रखने पर (3(4)-2(2)(-4)-4=24) मिलता है। दो चर वाले प्रश्न में चिह्न ध्यान से रखें। / Substitution gives (3(4)-2(2)(-4)-4=24). Keep signs carefully in two-variable questions.

Which concept should I revise for this Mathematics MCQ?

Substitution gives (3(4)-2(2)(-4)-4=24). Keep signs carefully in two-variable questions.

What exam hint can help solve this Mathematics question?

मान रखने पर (3(4)-2(2)(-4)-4=24) मिलता है। दो चर वाले प्रश्न में चिह्न ध्यान से रखें।