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〖1/1算式〗
    作业：求算式 0.153*2.53-3.1308+sqrt((3.1308-0.153*2.53)^2-0.2044*(0.31257-0.167*2.53)) 的值.
    题型：数学计算
    解:
          0.153*2.53-3.1308+sqrt((3.1308-0.153*2.53)^2-0.2044*(0.31257-0.167*2.53))
        =0.153*2.53-3.1308+sqrt(2.74371^2-0.2044*(0.31257-0.167*2.53))
        =0.153*2.53-3.1308+sqrt(2.74371^2-0.2044*(-0.10994))
        =0.153*2.53-3.1308+sqrt7.550417
        =0.153*2.53-3.1308+2.747802
        =0.38709-3.1308+2.747802
        =-2.74371+2.747802
        =0.004092
    答案:0.153*2.53-3.1308+sqrt((3.1308-0.153*2.53)^2-0.2044*(0.31257-0.167*2.53))=0.004092

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