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 \(a^3+3a^2b+2b^3\)?
Explanation opens after your attempt
A. (-6)
Concept
Substitution gives (8+3(4)(-1)+2(-1)=-6). Handle powers and signs carefully.
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.
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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