- #1
zetafunction
- 391
- 0
Homework Statement
in order to factorize 20 on the rings of [tex] Q( \sqrt 2) [/tex] i must solve
Homework Equations
[tex] x^{2} -2y^{2}=10 [/tex]
The Attempt at a Solution
i do not know how to solve it, i have tried by brute force with calculator but can not get any response , the given hint is that [tex] x^{2} -2y^{2}=5 [/tex] has no solution.