Show that : (a + b) (a - b) + (b - c) (b + c) + (c -a) (c + a) = 0
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Answer:
(a+b) (a-b) + (b-c) (b+c) + (c-a) (c+a)
= 0+0+0
= 0
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f, j, gm, mg, k, k, k k,, k, kgckgck
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