Answer:
![(1)/(10c^(3)d^(4) )](https://img.qammunity.org/2020/formulas/mathematics/high-school/pyrmfng0iu83vql18d2ljywj8enmhaw02o.png)
Explanation:
THE GIVEN EXPRESSION IS
![\sqrt[3]{(1)/(1000c^(9)d^(12) ) }](https://img.qammunity.org/2020/formulas/mathematics/high-school/59ujfpcxg2uxjmcumkxncpfcn9kpmo4nbx.png)
To simplify this expression, we just have to apply the cubic root to each part of the fraction, as follows
![\frac{\sqrt[3]{1} }{\sqrt[3]{1000c^(9) d^(12) } }](https://img.qammunity.org/2020/formulas/mathematics/high-school/wd5dgony80ztn7fw61kfuebmwbhbi9v92o.png)
Then, we solve each root. Remember that to solve roots of powers, we just need to divide the exponent of the power by the index of the root, as follows
![\frac{1}{10c^{(9)/(3) } d^{(12)/(3) } }](https://img.qammunity.org/2020/formulas/mathematics/high-school/3gx1ca4v583tdugkuorcbp8w988fnoqfv1.png)
Therefore, the equivalent expression is
![(1)/(10c^(3)d^(4) )](https://img.qammunity.org/2020/formulas/mathematics/high-school/pyrmfng0iu83vql18d2ljywj8enmhaw02o.png)
So, the right answer is the third choice.