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Answer variants:
\(4xy^3z^2\)
\(4x^2y^2z\)
\(-4xy^3z\)
\(-10xy^2z^3\)
\(2x^4y^5z\)
\(x\)
\(2y^2z\)
\(2x^2\)
\(-2xy\)
\(x^4y^3\)
\(2xyz\)
 \(-5xy^2\)