But the Hp Prime feedback systematically add any multiplication to indicate, without any ambiguity, its interpretation of my inputs. P.S.: I type 2x and (-)4X directly without any implicit multiplication sign. Here are screenshots of the original tim_crouse problem in the SOLVE application, real resolution in CAS mode step by step or using the SOLVE command: In jonmoore's screenshot, we can see that he answers another problem where the unknown x is only present in the left side of the equation. In CAS, the numerical answer can be forced, it is enough to indicate a guessed value for the variable to be solved.Д«ut the real advantage of CAS mode is to used it for step by step symbolic resolutions (see capture). The only advantage of CAS in these cases is the ability to answer exact or exact long integers. In the simple examples, this approach leads to the same simple numerical solution(s). In CAS mode, by default, the HP Prime first tries to solve the equation symbolically. In HOME mode, numerical solutions are preferred based on standard 12-digit machine arithmetic. I get this solution in HOME as well as CAS mode.

This is the correct answer to the problem. (06-09-2022 10:47 AM)tim_crouse Wrote: According to the tutorial, I'm on Udemy, the answer is -1.

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