Simplify
[tex]\begin{gathered} \sqrt[]{d^9} \\ We\text{ can rewrite it as } \\ \sqrt[]{d^8\cdot d} \\ \text{Now, we can bring d}^8\text{ outside of the radical sign since 8 is a factor of 2. } \\ d^4\sqrt[]{d} \end{gathered}[/tex]answer:
[tex]d^4\sqrt[]{d}[/tex]