Question

a(a + b)³
- 3a²b(a + b)​

Answer 1

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Answer 2

Given equation is a(a+b)^3-3a^2b(a+b) =a(a^3+3ab(a+b))-3a^2b(a+b)

=a^4+ab^3+3a^2b(a+b)-3a^2b(a+b)=a^4+ab^3=a(a^3+b^3)

=a(a+b) (a^2-ab+b^2)

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