1. Square Roots and Irrational Numbers
COURSE 2 LESSON 8-5
Identify each number as rational or irrational. a
rational
121 is a perfect square. b
irrational
30 is not a perfect square.
c. –0.5167
rational
It is a terminating decimal. d
irrational
The decimal neither terminates nor repeats.
8-5

2. Square Roots and Irrational Numbers
COURSE 2 LESSON 8-5
Estimate each square root.
Identify each as rational or irrational.
about 2
about 5
rational
irrational
8-5