1) (а^4) * (а^22) = а^(4+22) = а^26
2) 2.8m^8n * (0.7m^4n)^(-2) = 2.8m^8n / (0.7m^4n)^2 = 2.8m^8n / (0.49m^8n^2) = 2.8 / 0.49 = 5.71
1) (а^4) * (а^22) = а^(4+22) = а^26
2) 2.8m^8n * (0.7m^4n)^(-2) = 2.8m^8n / (0.7m^4n)^2 = 2.8m^8n / (0.49m^8n^2) = 2.8 / 0.49 = 5.71