Question

How to expand a^3+b^3+c^3 - 3abc

Answer 1

a3 + b3 + c3 – 3abc = (a + b + c)(a2 + b2 + c2 – ab – bc – ca)

if a+b+c =0 then a^3 + b^3 +c^3 =3abc

hope this helps you.

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