Question

Which numbers are irrational?

Select each correct answer.


15−−√

21−−√

−9√

14√

Answer 1

Explanation:

square root of 15 is 3.8=irrational

square root of 21 is 4.58=irrational

square root of -9 is doesn't have a real square root

square root of 14 is 3.7 =irrational