Answer:
13. [tex]6x^7 y^7[/tex] || 14. [tex]\frac{25x^4}{y^6}[/tex]
explanation:
13.
[tex]\frac{12x^9 y^5}{2x^2 y^-2}[/tex]
[tex]6x^{9-2} y^{5--2}[/tex]
[tex]6x^7 y^7[/tex]
14.
[tex](\frac{5y^{-3} }{x^{-2} } )^{2}[/tex]
[tex](\frac{5y^{-3} }{x^{-2} } )(\frac{5y^{-3} }{x^{-2} } )[/tex]
[tex]\frac{\frac{25}{y^6}}{\left(x^{-2}\right)^2}[/tex]
[tex]\frac{\frac{25}{y^{-6} }}{\left(x^{-4}\right)}[/tex]
[tex]\frac{25x^4}{y^6}[/tex]
