Answer:
[tex](\frac{y^{4}}{10})^{3}[/tex]
Step-by-step explanation:
we have
[tex]0.001y^{12}[/tex]
we know that
[tex]0.001=\frac{1}{1,000}=\frac{1}{10^{3}}=(\frac{1}{10})^{3}[/tex]
[tex]y^{12}=(y^{4})^{3}[/tex]
substitute
[tex]0.001y^{12}=(\frac{1}{10})^{3}(y^{4})^{3}=(\frac{y^{4}}{10})^{3}[/tex]