Решение задания 445

1. a) $$(2 \times 10)^3 = 20^3 = 20 \times 20 \times 20 = 8000$$
2. б) $$(2 \times 5)^4 = 10^4 = 10 \times 10 \times 10 \times 10 = 10000$$
3. в) $$(3 \times 100)^4 = 300^4 = 300 \times 300 \times 300 \times 300 = 81000000$$
4. г) $$(5 \times 7 \times 20)^2 = (5 \times 20 \times 7)^2 = (100 \times 7)^2 = 700^2 = 700 \times 700 = 490000$$