यदि (a=2), (b=-1), तो \(a^3+3a^2b+2b^3\) का मान क्या होगा?

If (a=2), (b=-1), what is the value of \(a^3+3a^2b+2b^3\)?

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

A. (-6)

Step 1

Concept

Substitution gives (8+3(4)(-1)+2(-1)=-6). Handle powers and signs carefully.

Step 2

Why this answer is correct

The correct answer is A. (-6). Substitution gives (8+3(4)(-1)+2(-1)=-6). Handle powers and signs carefully.

Step 3

Exam Tip

मान रखने पर (8+3(4)(-1)+2(-1)=-6) मिलता है। घात और चिन्ह दोनों ध्यान से लें।

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Mathematics Answer, Explanation and Revision Hints

यदि (a=2), (b=-1), तो \(a^3+3a^2b+2b^3\) का मान क्या होगा? / If (a=2), (b=-1), what is the value of \(a^3+3a^2b+2b^3\)?

Correct Answer: A. (-6). Explanation: मान रखने पर (8+3(4)(-1)+2(-1)=-6) मिलता है। घात और चिन्ह दोनों ध्यान से लें। / Substitution gives (8+3(4)(-1)+2(-1)=-6). Handle powers and signs carefully.

Which concept should I revise for this Mathematics MCQ?

Substitution gives (8+3(4)(-1)+2(-1)=-6). Handle powers and signs carefully.

What exam hint can help solve this Mathematics question?

मान रखने पर (8+3(4)(-1)+2(-1)=-6) मिलता है। घात और चिन्ह दोनों ध्यान से लें।