2^(3.4)*5^(2.4)/10^(1.4)=2^(2+1.4)+5^(1+1.4)/10^(1.4)=2^(2)*2^(1.4)*5^(1)*5^(1.4)/10^(1/4)=4*5*(2*5)^(1.4)/10^(1.4)=20*10^(1.4)/10^(1.4)=20 ОТВЕТ:20