Radicand and Index of a Radical Expression


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Posted by markmorse@nocharge.com (66.109.196.225) on September 24, 2003 at 02:26:07:

In Reply to: plz help posted by on September 23, 2003 at 23:53:27:


The radicand is whatever appears underneath the radical sign.

In this case, it is y^ - 8.

The index tells us what kind of root it is.

A square root has an index of 2.
A cube root has an index of 3.
A fourth root has an index of 4, and so on.

~ Mark



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