irratonal numbers can't be written as a/b where a and b are integers and b≠0
so if it can be written in form a/b then it is not irrational
[tex]\sqrt{36}=6=\frac{6}{1}[/tex], it's rational
1/5 is rational
[tex]\sqrt{60}=2\sqrt{15}[/tex] it's irrational because we can't simplify the square root further
6.3=6.3/1=63/100, rationanl
answer is [tex]\sqrt{60}[/tex] is irrational
