Problem with 2nd order polynomial

[C.Ret]

Hi guys!

Just look at this and compare:



What are your conclusions or assumptions? Are they the same as the one I just made?

How did the CAS-solve statement work out numerically compared to other specific and only numeric functions?
Did you understand what happened with CAS-solve when an interval is given for the numerical variable x? Why this works in the first case?

Hope this helps you a little.

And that the prankster HP Prime didn't ruin all of ktomb 's hopes of passing his exam!