总述：本次共解1题。其中
           ☆算术计算1题

〖1/1算式〗
    作业：求算式 -26.31+51.52×1.10-1/2×12.93×(1.10)^2-1/2×20.41×1.45×(1-2/3×1.45)-1/2×12.93×(1.10-1.45)^2 的值.
    题型：数学计算
    解:
          -26.31+51.52×1.10-1/2×12.93×(1.10)^2-1/2×20.41×1.45×(1-2/3×1.45)-1/2×12.93×(1.10-1.45)^2
        =-26.31+51.52×1.10-1/2×12.93×1.1^2-1/2×20.41×1.45×(1-2/3×1.45)-1/2×12.93×(1.10-1.45)^2
        =-26.31+51.52×1.10-1/2×12.93×1.1^2-1/2×20.41×1.45×0.033333-1/2×12.93×(1.10-1.45)^2
        =-26.31+51.52×1.10-1/2×12.93×1.1^2-1/2×20.41×1.45×0.033333-1/2×12.93×(-0.35)^2
        =-26.31+51.52×1.1-1/2×12.93×1.21-1/2×20.41×1.45×0.033333-1/2×12.93×(-0.35)^2
        =-26.31+51.52×1.1-1/2×12.93×1.21-1/2×20.41×1.45×0.033333-1/2×12.93×0.1225
        =-26.31+56.672-1/2×12.93×1.21-1/2×20.41×1.45×0.033333-1/2×12.93×0.1225
        =-26.31+56.672-0.5×12.93×1.21-1/2×20.41×1.45×0.033333-1/2×12.93×0.1225
        =-26.31+56.672-6.465×1.21-1/2×20.41×1.45×0.033333-1/2×12.93×0.1225
        =-26.31+56.672-7.82265-1/2×20.41×1.45×0.033333-1/2×12.93×0.1225
        =-26.31+56.672-7.82265-0.5×20.41×1.45×0.033333-1/2×12.93×0.1225
        =-26.31+56.672-7.82265-10.205×1.45×0.033333-1/2×12.93×0.1225
        =-26.31+56.672-7.82265-14.79725×0.033333-1/2×12.93×0.1225
        =-26.31+56.672-7.82265-0.493237-1/2×12.93×0.1225
        =-26.31+56.672-7.82265-0.493237-0.5×12.93×0.1225
        =-26.31+56.672-7.82265-0.493237-6.465×0.1225
        =-26.31+56.672-7.82265-0.493237-0.791963
        =30.362-7.82265-0.493237-0.791963
        =22.53935-0.493237-0.791963
        =22.046113-0.791963
        =21.25415
    答案:-26.31+51.52×1.10-1/2×12.93×(1.10)^2-1/2×20.41×1.45×(1-2/3×1.45)-1/2×12.93×(1.10-1.45)^2=21.25415

你的问题在这里没有得到解决？请到 热门难题 里面看看吧！