Prove that the following inequality holds for all real numbers a, b and c.?

a^4 + b^4 + c^4 is greater or equal to (a^2)(b)(c) + (b^2)(a)(c) + (c^2)(a)(b)

Prove that the following inequality holds for all real numbers a, b and c.?
1%26gt;=a^2bc+b^2 ac +c^2 ab / a^2+b^2+c^2


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