7.1; Roots and radical Expressions

Question 1

Radicand

Answer 1

The number under the radical sign

Question 2

Index

Answer 2

Gives the degree of the root

Question 3

Principal Root

Answer 3

When a number has two real roots, the positive root

Question 4

nth root

Answer 4

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