[ATTACH=full]2917[/ATTACH]
(a - b) (a^2 - a b + b^2)...........exspand =a*a^2 - a*a b + a*b^2-b*a^2 -b*(- a b )-b* b^2 =a^3 - a^2 b + a*b^2-b*a^2 + a b^2-b^3 =a^3 - a^2 b + a*b^2-b*a^2 + a b^2-b^3.......cancel bolded and blue =a^3 -b^3 since (a - b) (a^2 - a b + b^2)=a^3 -b^3, and c. a^3 +b^3=(a - b) (a^2 - a b + b^2) we see that c is not identity
This is not my thread. I still find it unbelievably disrespectful for SureHeIs to ignore your effort and hard work.