1) $$√0,04\cdot49 = √0,04 \cdot √49 = 0,2 \cdot 7 = 1,4$$
2) $$√98 \cdot 2 = √{49 \cdot 2} \cdot 2 = √{49 \cdot 4} = √{196} = 14$$
3) $$\frac{√14775}{√3} = √\frac{14775}{3} = √4925 = √{25 \cdot 197} = 5√197$$
4) $$\sqrt{(-5)^4} = \sqrt{625} = 25$$
5) $$\sqrt{1600} = 40$$
6) $$\sqrt[6]{1} = 1$$
Ответ: 1) 1,4; 2) 14; 3) $$5√197$$; 4) 25; 5) 40; 6) 1