А=12,5 - 12,5 * (0,726 - 5,562 : 5,4)=12.5-12.5*(0.726-1.03)=12.5-12.5*(-0.304)=12.5-3.8=8.7
В=- 0,24 * ( - 1,625) : ( 38,1 : 7,5 - 4,3) + 11,7 : ( -1,5)= - 0.39:(5.08-4.3)+11.7 = - 0.39:0.78+11.7=-0.5+11.7=11.2
(А+В)^2 = (8.7+11.2)^2= 8.7^2+2*8.7*11.2+11.2^2=75.69+194.88+125.4=396.01