ANSWER
[tex]xy^2[/tex]EXPLANATION
We want to write the expression in exponential form:
[tex](-y)\cdot(-y)\cdot x[/tex]To do this, we simplify by applying the indices law of addition:
[tex]\begin{gathered} (-1\cdot-1)\cdot y^{(1+1)}\cdot x \\ \Rightarrow y^2\cdot x \\ \Rightarrow xy^2 \end{gathered}[/tex]That is the answer.