7.1: Roots and Radical Expressions

Question 1

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

Answer 1

DEF:nth root

Question 2

The number under the radical sign

Answer 2

Radicand

Question 3

gives the degree of the root

Answer 3

index

Question 4

a number has two real roots, the positive root

Answer 4

principal root

Question 5

any negative real number a, nan=a when n is even.

Answer 5

Nth Root of an, a<0