What is wrong with my code?

[C.Ret]

(01-23-2021 02:30 PM)Albert Chan Wrote:  [...]
Combining 2 assignments into 1, we *mostly* avoided the non-exact path.
But, this assumed all inputs are integers.

Thanks, that the point I missed. Your strategy is by far more efficient:

r := simplify(√(exact(c-a)^2+exact(d-b)^2)); // \( r = \frac{2\times \sqrt{61}}{5} \)


I still in trouble reproducing the 'non ticking' behavior of SpyBot's results.

Is there a way to avoid the evaluation of an expressions ?