Question

evaluate ( a-b)^3 + (b-c) ^3 + ( c-a) ^3
please give correct answer
don't give unnecessary answers
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Answer 1

(a-b)3 + (b-c)3 + (c-a)3 = a3 - b3 - 3ab(a-b) + b3 - c3 - 3bc(b-c) + c3 - a3 - 3ca(c-a) = - 3a2b + 3ab2 - 3b2c + 3bc2 - 3ac2  ...