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