Question

(a+b) = a^3b^3+Зab(a+b)
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Answer 1

(a+b)^3=a^3+b^3+3ab(a+b)

=a^3+b^3+3a^2b+3ab^2

Answer 2

no it is wrong

correct

(a + b )³=a³b³+Зab(a+b )

Or

a³ + b³ + 2a²b +2ab²