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What is (( x ^(2) - y^(2))^(3) + ( y ^...

What is ` (( x ^(2) - y^(2))^(3) + ( y ^(2) - z^(2))^(3) + ( z^(2) - x^(2))^(3))/(( x - y )^(3) + ( y - z)^(3) + ( z - x)^(3))`

A

`((x+y)(y+z))/((x+z))`

B

`(x+y)^3 (y + z)^3 (z + x)^3`

C

`(x +y) (y + z) (z + x)`

D

`(x + y) (y + z)`

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