Question 886627
<pre>
Yes, it is common for distances between two points with whole numbers
for coordinates to be the square root of a number with no exact square root.

However {{{sqrt(128)}}} can be simplified

{{{sqrt(128)}}}{{{""=""}}}{{{  sqrt(64*2)}}}{{{""=""}}}{{{sqrt(64)*sqrt(2)}}}{{{""=""}}}{{{8*sqrt(2)}}}.

Even though you can't get rid of a radical, always simplify it so as to have
as small a number under the square root radical as possible.

Edwin</pre>