Expand `Sigmac^(2) (a^(2) -b^(2))`

1.	Expand `Sigmac^(2) (a^(2) -b^(2))`
Answer» Correct Answer - `c^(2) (a^(2) -b^(2)) + a^(2) (b^(2) -c^(2)) + b^(2) (c^(2) -a^(2))`

Discussion

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