If a,b,c be non-negative numbers,show that:a2a-ba-c+b2b-cb-a+c2c-ac-b≥0

If a,b,c be non-negative numbers,show that: $a^{2} (a - b) (a - c) + b^{2} (b - c) (b - a) + c^{2} (c - a) (c - b) \geq 0$

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