What is this "order of operation" cult now with math?

[Claudio L.]

(05-05-2021 12:51 PM)Albert Chan Wrote:  

(04-08-2021 05:34 PM)Maximilian Hohmann Wrote:  It is an exact science as long as unambiguous notation is used.

Quote from the video: "it depends who you are talking to ... "

Yeah... it depends on how much math the person you are talking to knows:

sqrt(-9) = No real answer: if you don't know complex numbers exist
sqrt(-9) = 3i : If you watch some guy on the internet
sqrt(-9) = 3i and -3i: If you actually care about math at all...