Question

(2m^7)^2 : (2m^5)^3 при m= 5.

Answer 1

$(2m ^{7} ) ^{2} \div ( {2m}^{5} ) ^{3} = {4m}^{14} \div {8m}^{15} = {0.5m}^{ - 1} \\ \frac{5}{10 } \times \frac{1}{m} = \frac{5}{10} \times \frac{1}{5} = \frac{1}{10}$