Given expression:
.
We need to find the product of above given expression.
We can see that both radical expressions being multiplied are of 5th root.
So, we could multiply inside expressions of the 5th root in both radicals.
.
Therefore,
.
We can't simplify 5th root of 16 and 5th root of x^4.
Therefore, final answer is
![\sqrt[5]{16x^4}.](https://img.qammunity.org/2019/formulas/mathematics/high-school/w04jjmrxb2a5mcss7vxso1o6n8u7nnul2q.png)