​ xy^2+2xy-3xy^2+xy

xy^2+2xy-3xy^2+xy

\(xy^2+2xy-3xy^2+xy\)

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

\(=xy(y+2-3y+1)\)

\(=xy(3-2y)\)

\(=3xy-2xy^2\)

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