Нужно дорешать после многоточия, помогите, пожалуйста! Разложить на множители
(x-y)^3 + (y-z)^3 + (z-x)^3
(х-у)^3 +(y-z)^3 = (x-y + y-z)((x-y)^2 - (x-y)(y-z) + (y-z)^2)
(x-y)^3 + (y-z)^3 + (z-x)^3 = (x-z)((x-y)^2 - (x-y)(y-z) + (y-z)^2) - (x-z)^3 =
(x-z)((x-y)^2 - (x-y)(y-z) + (y-z)^2 - (x-z)^2) =
(x-z)((x-y)^2 - (x-y)(y-z) + (y-z)^2 - (x-z)^2) = ... =
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