Вычислите: (5,15^2-2*5,15*3,15+3,15^2)/(7,25^2-2,75^2).

\[\frac{{5,15}^{2} - 2 \bullet 5,15 \bullet 3,15 + {3,15}^{2}}{{7,25}^{2} - {2,75}^{2}} =\]

\[= \frac{(5,15 - 3,15)^{2}}{(7,25 - 2,75)(7,25 + 2,75)} =\]

\[= \frac{2^{2}}{4,5 \bullet 10} = \frac{4}{45}\]