simplifying radical expressions

3\/""""4""7"
250z x sorry it was hard to type
some of the characters.so it's cube on outside of 250 z to the 4th, xto the 7th inside the radical sign

∛(250z^4x^7)

= ∛(125z^3x^6 * 2zx)
= 5zx^2 ∛(2zx)