x 2 - 365 = 364; y - √ 324 = √ 81

x² - 365 = 364
⇒ x² = 364 + 365
∴ x = √729 = ± 27
and y - √324 = √81 ⇒ y - 18 = 9
∴ y = 27
So, y ≥ x or x ≤ y because y = 27 and x = 27 and - 27.