1.

Show that:(a-b) (a-b) + (b-c) (b-c) + (c-a) (c-a) =o

Answer»

ANSWER:

(a-b)( a-b)+( b-c)( b-c )+(c-a)( c-a )

(a^2+b^2-2ab )+ (b^2+c^2-2ac)+(c^2+a^2-2ac)

which is not equal to 0

hence this can't be PROVED or ur QUESTION have some mistake


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