Answer
$-x^{2}y^{7}z$
Work Step by Step
$-xy^{2}\times y^{3}\times xy^{2}z=-(xy^{2}\times y^{3}\times xy^{2}z)=-(x^{1+1}\times y^{2+3+2}\times z)=-x^{2}y^{7}z$
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