Simplify using following identity :(a b) (a^2 a b+b^2 )=a^3 b^3 (a 3 -3 b ) (a^2 9 +a b+9 b^2 )

(a 3 -3 b ) (a^2 9 +a b+9 b^2 ) = (a 3 -3 b ) [ (a 3 )^2+ (a 3 )(3 b)+(3 b)^2 ] = (a 3 )^3-(3 b)^3 =a^3 27 -27 b^3

Simplify using following identity :(a b) (a^2 a b+b^2 )=a^3 b^3 (…

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