What 2 integers does #sqrt(18)# fall between?

1 Answer

#4, 5; -4, -5#

Explanation:

One way to do this is to take integers and square them:

#4^2=16#
#5^2=25#

Keep in mind, however, that we can also do this on the negative side:

#(-4)^2=16#
#(-5)^2=25#

And so if we can limit the answer to positive integers, we have one set. But if we allow negative integers, we have 2 sets.