Question

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Prove that : (x +y) ^3 +(y+z) ^3 +(z+x) ^3 - 3(x+y) (y+z) ( z+x) =2 (x^3 +y^3 +x^3 - 3xyz​​

Answer 1

Answer:

2(x^3+y^3+z^3-3xyz= RHS PROVED