Hello, Pablo López. I hope you won't mind me writing in English. Could you please check the results for case three in your Test Suite? In my Solution 1523771 I am getting different values for the x-intercepts. (I think that's what is sought, but sorry if my rough translation was in error.)   Also, I cannot see any instruction as to the order in which to return the points. For example, in test case one, why is [-5 -1 -10] correct, but [-1 -5 -10] would not be accepted?   —DIV

The roots must be sorted, and the value at y must come at last. Please, fix the 3rd case. The roots are with their signs misplaced (use the function roots to test it).

I believe that the test suite is now functioning properly, presuming sorted roots.