SOLUTION: Which is a irrational number the square root of 5, the square root, of 9, the square root of -1, or the square root of 2 thirds

Algebra ->  Real-numbers -> SOLUTION: Which is a irrational number the square root of 5, the square root, of 9, the square root of -1, or the square root of 2 thirds      Log On


   

Question 186769: Which is a irrational number the square root of 5, the square root, of 9, the square root of -1, or the square root of 2 thirds
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%285%29 is irrational (since it CANNOT be written as a fraction of integers)


sqrt%289%29=3 which is rational since 3=3%2F1


sqrt%28-1%29=i which is complex (ie not real)


is irrational as it can't be written as a fraction of 2 integers.