A) 7 * 2^2 * 2^(-5*(2/5)) = 7 * 2^2 * 2^(-2) = 7 * 2^(2+(-2))= 7 * 2^0 = 7 * 1 = 7
б) 3^(1/2) * 2^(1/2)/36^(1/4) = 3^(1/2) * 2^(1/2) /3^(1/2)*2^(1/2)= 3^(1/2 - 1/2) * 2^(1/2 -1/2) = 1*1=1
в) 2^(8/3) * 3^(8/3) * 10^5 /10^3 * 3^(3/2) * 3^(2/3) = 2^(8/3) * 3^(8/3 -3/2 - 2/3) * 10^(5-3)= 2^(8/3) * 3^(1/2) * 10^2=2^(8/3) * 3^(1/2) * 5^2 * 2^2 = 2^(8/3 - 2) * 3^(1/2) *5^2 =25 * 2^(2/3) *3^(1/2)