Question

Phân tích thành nhân tử

9/ x³-y³+2x-2y

Answer 1

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

\(=\left(x-y\right)\left(x^2+xy+y^2+2\right)\)

Answer 2

`x^3 - y^3 + 2x - 2y`

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

`= (x + y)(x^2 + xy + y^2 + 2)`