1.

Find((x^(2)-y^(2))^(3) + (y^(2) -z^(2))^(3)+ (z^(2) -x^(2))^(3))/((x-y)^(3) + (y-z)^(3) + (z-x)^(3))

Answer»

`3(x+y) (y+z) (z+x)`
`3(x+y) (y+z) (z-x)`
`(x+y) (y+z) (z+x)`
`9(x+y) (y+z) (z+x)`


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