$$\sin ^ { 1 } ( x + y ) ( x + y ) ( x + y ) + ( x + y ) ( x - y )$$
$\left(x+y\right)\left(\left(x+y\right)\sin(x+y)+x-y\right)$
$$\left(x+y\right)\left(\left(\sin(x+y)\right)^{1}\left(x+y\right)+x-y\right)$$
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