1.

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

Answer»

ANSWER:

LET x-y=p,y-z=q,z-x=r

so we have IDENTITY p³+q³+r³=3pqr

so this QUESTION is PROVED


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