यदि (x=3) और (y=-1), तो \(2x^2-xy+4y\) का मान क्या होगा?

If (x=3) and (y=-1), what is the value of \(2x^2-xy+4y\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. (17)

Step 1

Concept

Substitution gives (2(9)-3(-1)+4(-1)=17). In two-variable questions, check signs separately.

Step 2

Why this answer is correct

The correct answer is A. (17). Substitution gives (2(9)-3(-1)+4(-1)=17). In two-variable questions, check signs separately.

Step 3

Exam Tip

मान रखने पर (2(9)-3(-1)+4(-1)=17) मिलता है। दो चर वाले प्रश्न में चिह्न अलग से जांचें।

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Mathematics Answer, Explanation and Revision Hints

यदि (x=3) और (y=-1), तो \(2x^2-xy+4y\) का मान क्या होगा? / If (x=3) and (y=-1), what is the value of \(2x^2-xy+4y\)?

Correct Answer: A. (17). Explanation: मान रखने पर (2(9)-3(-1)+4(-1)=17) मिलता है। दो चर वाले प्रश्न में चिह्न अलग से जांचें। / Substitution gives (2(9)-3(-1)+4(-1)=17). In two-variable questions, check signs separately.

Which concept should I revise for this Mathematics MCQ?

Substitution gives (2(9)-3(-1)+4(-1)=17). In two-variable questions, check signs separately.

What exam hint can help solve this Mathematics question?

मान रखने पर (2(9)-3(-1)+4(-1)=17) मिलता है। दो चर वाले प्रश्न में चिह्न अलग से जांचें।