Question

$2x { }^{2} - xy(xy { }^{ - 1} - x {}^{ - 1} y)$
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Answer 1

Ответ:

2x²-xy(xy-¹-x-¹y)=x(2x-y(xy-¹-x-¹))=x(2x-x+x-¹y²)=x(x+x-¹y²)