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+48.14×1.27-1/2×12.93×(1.27)^2-1/2×20.41×1.45×(1.27-2/3×1.45)-1/2×12.93×(1.27-1.45)^2 的值.
    题型：数学计算
    解:
          -26.31+48.14×1.27-1/2×12.93×(1.27)^2-1/2×20.41×1.45×(1.27-2/3×1.45)-1/2×12.93×(1.27-1.45)^2
        =-26.31+48.14×1.27-1/2×12.93×1.27^2-1/2×20.41×1.45×(1.27-2/3×1.45)-1/2×12.93×(1.27-1.45)^2
        =-26.31+48.14×1.27-1/2×12.93×1.27^2-1/2×20.41×1.45×0.303333-1/2×12.93×(1.27-1.45)^2
        =-26.31+48.14×1.27-1/2×12.93×1.27^2-1/2×20.41×1.45×0.303333-1/2×12.93×(-0.18)^2
        =-26.31+48.14×1.27-1/2×12.93×1.6129-1/2×20.41×1.45×0.303333-1/2×12.93×(-0.18)^2
        =-26.31+48.14×1.27-1/2×12.93×1.6129-1/2×20.41×1.45×0.303333-1/2×12.93×0.0324
        =-26.31+61.1378-1/2×12.93×1.6129-1/2×20.41×1.45×0.303333-1/2×12.93×0.0324
        =-26.31+61.1378-0.5×12.93×1.6129-1/2×20.41×1.45×0.303333-1/2×12.93×0.0324
        =-26.31+61.1378-6.465×1.6129-1/2×20.41×1.45×0.303333-1/2×12.93×0.0324
        =-26.31+61.1378-10.427398-1/2×20.41×1.45×0.303333-1/2×12.93×0.0324
        =-26.31+61.1378-10.427398-0.5×20.41×1.45×0.303333-1/2×12.93×0.0324
        =-26.31+61.1378-10.427398-10.205×1.45×0.303333-1/2×12.93×0.0324
        =-26.31+61.1378-10.427398-14.79725×0.303333-1/2×12.93×0.0324
        =-26.31+61.1378-10.427398-4.488494-1/2×12.93×0.0324
        =-26.31+61.1378-10.427398-4.488494-0.5×12.93×0.0324
        =-26.31+61.1378-10.427398-4.488494-6.465×0.0324
        =-26.31+61.1378-10.427398-4.488494-0.209466
        =34.8278-10.427398-4.488494-0.209466
        =24.400402-4.488494-0.209466
        =19.911908-0.209466
        =19.702442
    答案:-26.31+48.14×1.27-1/2×12.93×(1.27)^2-1/2×20.41×1.45×(1.27-2/3×1.45)-1/2×12.93×(1.27-1.45)^2=19.702442

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