Question

x²y+xy²-x-y

Answer 1

\(x^2y+xy^2-x-y=xy\left(x+y\right)-\left(x+y\right)=\left(x+y\right)\left(xy-1\right)\)

Answer 2

pt\(\Leftrightarrow x\left(xy-1\right)-y\left(xy-1\right)\)

\(\Leftrightarrow\left(xy-1\right)\left(x-y\right)\)

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