Algebrahard · Past Paper
If a + b + c = 0, find the value of a^3 + b^3 + c^3.
A0
Babc
C3abc
D-3abc
✓ Correct Answer: C — 3abc
Using the identity a^3 + b^3 + c^3 - 3abc = (a+b+c)(a^2+b^2+c^2-ab-bc-ca). If a+b+c=0, a^3+b^3+c^3 = 3abc.
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