/sci/ - Science & Math » Thread #12940418

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Anonymous Wed 07 Apr 18:09:18 2021 No.12940418 View Reply Original Report

Quoted By: >>12940969 >>12941380 >>12941526

/sci/, how do I prove this?
$\forall (x,y) \in N^2 : 3x+2 \neq y^2$
???

Anonymous

Anonymous Wed 07 Apr 2021 20:05:16 No.12940969 Report

Quoted By: >>12941929

>>12940418
Try the equation mod3

Anonymous

Anonymous Wed 07 Apr 2021 20:06:42 No.12940979 Report

Quoted By: >>12941351

Draw the functions.

Anonymous

Anonymous Wed 07 Apr 2021 21:13:52 No.12941351 Report

Quoted By:

>>12940979
How does that help?

Anonymous

Anonymous Wed 07 Apr 2021 21:18:09 No.12941380 Report

Quoted By: >>12941486

>>12940418
Hint
(x+ 1)(x+2) =/= x2 + y2

Anonymous

Anonymous Wed 07 Apr 2021 21:30:01 No.12941486 Report

Quoted By:

>>12941380
then what?

Anonymous

Anonymous Wed 07 Apr 2021 21:35:15 No.12941526 Report

Quoted By:

>>12940418
Take the residue mod 3.

Anonymous

Anonymous Wed 07 Apr 2021 22:59:05 No.12941929 Report

Quoted By:

>>12940969
Smart
Nice

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