Question

Which of the following is a pair of equivalent radical expressions?

A. √45 and 3√15
B. √ 75 and 3√5
C. √54 and 9√6
D. √180 and 3√20

Answer 1

D. √180 and 3√20

Explanation:

3√20

= √9√20

= √(9 * 20)

= √180