Question 77
Prove that the equation
$$
14 x^{2}+15 y^{2}=7^{2000}
$$
has no integer solutions $(x,y)$.
$$
14 x^{2}+15 y^{2}=7^{2000}
$$
has no integer solutions $(x,y)$.
MathNet 2000 — Math Olympiad Vault Question 77
Math Olympiad Vault · MathNet 2000 — Math Olympiad Vault