Răspuns:
b) \( \frac{{5^3 \times 25 - 25^2}}{{5^2}} \)
\( = \frac{{125 \times 25 - 625}}{{25}} \)
\( = \frac{{3125 - 625}}{{25}} \)
\( = \frac{{2500}}{{25}} \)
\( = 100 \)
c) \( \frac{{7^2 \times 31 + 31^2}}{{2^4}} \)
\( = \frac{{49 \times 31 + 961}}{{16}} \)
\( = \frac{{1519}}{{16}} \)
\( \approx 94.9375 \)
d) \( \frac{{2^2 + 2^6 \times 26}}{{3^2}} \)
\( = \frac{{4 + 64 \times 26}}{{9}} \)
\( = \frac{{4 + 1664}}{{9}} \)
\( = \frac{{1668}}{{9}} \)
\( \approx 185.33 \)
