Question

efectuati
2supra5 totul la-2 - 25supra4

Answer 1

$(\frac{2}{5} ) ^{2}- \frac{25}{4}= \frac{4}{25} - \frac{25}{4}= \frac{16-625}{100}= \frac{-609}{100}$

Answer 2

1supra(2supra5)la2 - 25supra4 = 1supra4supra25 - 25supra4 = 25supra4 - 25supra4 = 0