Question

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

Answer 1

Step-by-step explanation:

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Answer 2

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