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 -0.0004*40^6+0.0421*40^5-1.8629*40^4+38.863*40^3-383.73*40^2+1573.7*40-1766 的值.
    题型：数学计算
    解:
          -0.0004*40^6+0.0421*40^5-1.8629*40^4+38.863*40^3-383.73*40^2+1573.7*40-1766
        =-0.0004*4096000000+0.0421*40^5-1.8629*40^4+38.863*40^3-383.73*40^2+1573.7*40-1766
        =-0.0004*4096000000+0.0421*102400000-1.8629*40^4+38.863*40^3-383.73*40^2+1573.7*40-1766
        =-0.0004*4096000000+0.0421*102400000-1.8629*2560000+38.863*40^3-383.73*40^2+1573.7*40-1766
        =-0.0004*4096000000+0.0421*102400000-1.8629*2560000+38.863*64000-383.73*40^2+1573.7*40-1766
        =-0.0004*4096000000+0.0421*102400000-1.8629*2560000+38.863*64000-383.73*1600+1573.7*40-1766
        =-1638400+0.0421*102400000-1.8629*2560000+38.863*64000-383.73*1600+1573.7*40-1766
        =-1638400+4311040-1.8629*2560000+38.863*64000-383.73*1600+1573.7*40-1766
        =-1638400+4311040-4769024+38.863*64000-383.73*1600+1573.7*40-1766
        =-1638400+4311040-4769024+2487232-383.73*1600+1573.7*40-1766
        =-1638400+4311040-4769024+2487232-613968+1573.7*40-1766
        =-1638400+4311040-4769024+2487232-613968+62948-1766
        =2672640-4769024+2487232-613968+62948-1766
        =-2096384+2487232-613968+62948-1766
        =390848-613968+62948-1766
        =-223120+62948-1766
        =-160172-1766
        =-161938
    答案:-0.0004*40^6+0.0421*40^5-1.8629*40^4+38.863*40^3-383.73*40^2+1573.7*40-1766=-161938

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