Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\{ ( x + y ) ^ { 3 } - x - y \}$$

Evaluate

$\left(x+y\right)^{3}-x-y$

Expand

$x^{3}+3xy^{2}-x+y^{3}+3yx^{2}-y$

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