Question

How do you rationalize the denominator and simplify `(sqrt 5 + sqrt 6 ) / 3`?

Answer 1

The denominator of `(sqrt(5)+sqrt(6))/color(blue)3` is `color(blue)3` which is already a rational;
further "simplification" is not possible.

Explanation:

You could rewrite the given expression as `sqrt(5)/3+sqrt(6)/3` if you felt this was "simpler";
or you could use a calculator to determine an approximate value for this expression.,