Substitute x = 2 and y = 1. (2² - 1²) / (2² + 1²) = (4 - 1) / (4 + 1) = 3/5.
x = 2 और y = 1 प्रतिस्थापित करें। (2² - 1²) / (2² + 1²) = (4 - 1) / (4 + 1) = 3/5।