Depends on what are the allowed values for x are. Real numbers, complexe numbers, binary or I made up my own numbers ;)
Comment on Conversing with Mathematicians
quicksand@lemm.ee 1 month agox has to be -10, right? Or am I missing something?
Ravi@feddit.org 1 month ago
WolfLink@sh.itjust.works 1 month ago
The answer in the meme (10i^2) is -10
Malgas@beehaw.org 1 month ago
Probably what they were going for, but there are literally an infinite number of exotic arithmetic spaces you could ask this question in. For example, x=10 works in any ring with a modulus greater than 100 and less than 1000.
Umbrias@beehaw.org 1 month ago
fortunately math problems are administered in the context of the class, so it will be pretty obvious that it’s in the complex plane.
jacksilver@lemmy.world 1 month ago
Yeah, I think the point is that the person answering was wrong/over complicating. If x=10i, then x^2 would be -100 (or potentially -10 depending on what you think the ^2 is applied to).
Khanzarate@lemmy.world 1 month ago
They said x=10i^2, not 10i. Difference is it equals -10, and they chose not to simplify.
SoleInvictus@lemmy.blahaj.zone 1 month ago
They’re correct, it’s just overcomplicated as fuck in ways that are correct but completely irrelevant to the question.