Question

factorise x(x+y)^3-3x^2y(x+y)

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Answer 1

Answer:

=x(x^3+y^3+3xy(x+y))-3x^3y^2-3x^2y^2

=x^4+xy^3+3x^3y+3x^2y-3x^3y^2-3x^2y^2

=x^4+xy^3

=x(x^3+y^3)

=