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someone explain to me how to show that x^4-y^4=3 has a interger solution using modular arithmetic.

i used mod 3 to show that it has solutions but then i realised thats wrong for obvous reasons.

apparently i have used mod5 but i dont see how it got to that

#whydoisuckatmaths

#fuckmylife

@Placholdr You figured it out *because* you posted the question. #RubberDucking

@peterdrake rubberducking?

@Placholdr This is the practice, in programming, of explaining your problem to a literal rubber duck. Often the process of explaining the problem helps you figure it out.

https://en.wikipedia.org/wiki/Rubber_duck_debugging

There does also seem to be an effect where, the more publicly you post your confusion, the more quickly you realize your silly mistake. Finally, in the classroom, your ability to do math is inversely proportional to your proximity to a whiteboard.

thanks for showing me this

Placholdr@Placholdr@qoto.orgalright so basically i figured where i fucked up.

and i also understand why i use mod 5