Задание 2

Вычислим значения выражений:

1. $$√16 - √25 = 4 - 5 = -1$$
2. $$√25 * √4 = 5 * 2 = 10$$
3. $$√49 : √400 = 7 : 20 = \frac{7}{20} = 0,35$$
4. $$√1225 - √2116 = 35 - 46 = -11$$
5. $$\frac{1}{√289} + √2,25 = \frac{1}{17} + 1,5 = \frac{1}{17} + \frac{3}{2} = \frac{2 + 51}{34} = \frac{53}{34} = 1\frac{19}{34}$$
6. $$\frac{3}{√1089} - √\frac{49}{121} = \frac{3}{33} - \frac{7}{11} = \frac{1}{11} - \frac{7}{11} = -\frac{6}{11}$$

Ответ:

1. -1
2. 10
3. 0,35
4. -11
5. $$1\frac{19}{34}$$
6. $$\frac{-6}{11}$$