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1. a + b + c = 0 হলে a3 + b3 + c3 এর মান কত?
- A. abc
- B. abc
- C. abc
- D. abc
Answer: Option B
Explanation:
a + b + c = 0
→ a + b = - c
→ (a + b)3 = - c3
→ a3 + b3 + 3ab(a + b) = - c3
→ a3 + b3 - 3abc = - c3
→ a3 + b3 + c3 = 3abc
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