5,15² - 2 х 5,15 х 3,15 + 3,15² / 7,25² - 2,75²
(5.15-3.15)^2 / (7.25-2.75)(7.25+2.75)
(5.15-3.15)^2 / 4.5 * 10
(5.15-3.15)^2 / 45
(5.15-3.15)^2
5,15² - 2 х 5,15 х 3,15 + 3,15²
26.5225 - 32.445 +9.9225 =4
ответ : 4
5,15² - 2 х 5,15 х 3,15 + 3,15² / 7,25² - 2,75²
(5.15-3.15)^2 / (7.25-2.75)(7.25+2.75)
(5.15-3.15)^2 / 4.5 * 10
(5.15-3.15)^2 / 45
(5.15-3.15)^2
5,15² - 2 х 5,15 х 3,15 + 3,15²
26.5225 - 32.445 +9.9225 =4
ответ : 4