# Algebra

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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 -

Fourth root is the same as to the 1/4th power, just like square root is the same as to the 1/2th power.

16x^2 * y * z^4

• Algebra -

you must of course also take the fourth root of 15 which is 2, so ...

2x^2 * y * z^4

• Algebra -

You are right Reiny. I got a little sloppy there and missed that.

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