now: ```$\quad x^2 - 4y^2 = n$``` real: <img width="239" height="49" alt="Image" src="https://github.com/user-attachments/assets/7e55a8ac-bc5e-4b35-b56b-82da1d27ca3b" /> now: <img width="535" height="195" alt="Image" src="https://github.com/user-attachments/assets/8c34381f-2bdd-4bb0-a5e4-235ccf68693f" /> real: <img width="1106" height="216" alt="Image" src="https://github.com/user-attachments/assets/01b72b28-9700-428b-90ac-ccaf05cebdf1" />
now:
$\quad x^2 - 4y^2 = n$real:
now:
real: