Raleigh Charter High School

In the root, a is the radicand, n is the index, and the symbol is known as the radical sign. Remember that numbers have 2 different roots. For example, 2 and -2 are both square roots of 4. They are also fourth roots of 16. We now introduce the concept of the principal root. Root. If n is even and a is positive, then . is the principal root of a ... ................
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