7.1 Roots and Radical Expressions

Question 1

nth root

Answer 1

For any real numbers a and b, and any positive integer n , if a(n) = b then a is an nth root of b

Question 2

Radicand

Answer 2

The number under the radical sign.

Question 3

Index

Answer 3

gives the degree of the root

Question 4

Principal Root

Answer 4

When a number has two real roots, the positive root is called the principal root.