Posted by Cassie on .
Let x, y, and z be positive numbers. What is the fourth root of the expression:
16x^8 * y^4 * z^16
What is a "fourth root"?
Thank you! :)

Algebra 
Sean,
Fourth root is the same as to the 1/4th power, just like square root is the same as to the 1/2th power.
Answer is:
16x^2 * y * z^4 
Algebra 
Reiny,
you must of course also take the fourth root of 15 which is 2, so ...
2x^2 * y * z^4 
Algebra 
Sean,
You are right Reiny. I got a little sloppy there and missed that.

Thank you, both! 
Cassie,
:)