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1. a3 + b3 = কত?
- A. a3 + 3a2b + 3ab2 + b3
- B. a3 + 3a2b + 3ab2 + b3
- C. a3 + 3a2b + 3ab2 + b3
- D. a3 + 3a2b + 3ab2 + b3
Answer: Option C
Explanation:
We know, (a+b)3=a3+b3+3a2b+3ab2=a3+b3+3ab(a+b)Therefore, a3+b3=(a+b)3-3ab(a+b)
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