Question

a(a+b)^3-3a^2b(a+b) pls tell fast

Answer 1

a(a+b)^3 - 3a^2b(a+b)

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

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

=a^4+ab^3

=a(a^3 + b^3)

hope this helps u