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 (-3.4981×10^(-8))×(298.15)^3+2.3430×10^(-4)×(298.15)^2+9.0121×10^(-1)×298.15 的值.
    题型：数学计算
    解:
          (-3.4981×10^(-8))×(298.15)^3+2.3430×10^(-4)×(298.15)^2+9.0121×10^(-1)×298.15
        =(-3.4981×10^(-8))×(298.15)^3+2.3430×10^(-4)×(298.15)^2+9.0121×10^(-1)×298.15
        =-0×(298.15)^3+2.3430×10^(-4)×(298.15)^2+9.0121×10^(-1)×298.15
        =-0×298.15^3+2.3430×10^(-4)×(298.15)^2+9.0121×10^(-1)×298.15
        =-0×298.15^3+2.3430×10^(-4)×(298.15)^2+9.0121×10^(-1)×298.15
        =-0×298.15^3+2.3430×10^-4×298.15^2+9.0121×10^(-1)×298.15
        =-0×298.15^3+2.3430×10^-4×298.15^2+9.0121×10^(-1)×298.15
        =-0×26503573.918374992907047+2.343×10^(-4)×298.15^2+9.0121×10^(-1)×298.15
        =-0×26503573.918374992907047+2.343×0.0001×298.15^2+9.0121×10^(-1)×298.15
        =-0×26503573.918374992907047+2.343×0.0001×88893.42249999998603+9.0121×10^(-1)×298.15
        =-0×26503573.918374992907047+2.343×0.0001×88893.42249999998603+9.0121×0.1×298.15
        =-0+2.343×0.0001×88893.42249999998603+9.0121×0.1×298.15
        =-0+0.000234×88893.42249999998603+9.0121×0.1×298.15
        =-0+20.801061+9.0121×0.1×298.15
        =-0+20.801061+0.90121×298.15
        =-0+20.801061+268.695761
        =20.801061+268.695761
        =289.496822
    答案:(-3.4981×10^(-8))×(298.15)^3+2.3430×10^(-4)×(298.15)^2+9.0121×10^(-1)×298.15=289.496822

你的问题在这里没有得到解决？请到 热门难题 里面看看吧！