MCQ
If $a + b + c = 0,$ then $a^3 + b^3 + c^3$ is equal to:
- A$2abc$
- B$1$
- ✓$3abc$
- D$Abc$
✓
Answer
Correct option: C.
$3abc$
If $a + b + c = 0,$ then
$a^3 + b^3 + c^3 - 3abc = 0$
$⇒ a^3 + b^3 + c^3 = 3abc$
$a^3 + b^3 + c^3 - 3abc = 0$
$⇒ a^3 + b^3 + c^3 = 3abc$
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