2.96×7.2+4.5×7.2=
    0.62×7.2+1.125×7.2
    (1-0.5×〖0.203〗^2+〖0.203〗^3 )×3
    (1-0.5×〖0.48〗^2+〖0.48〗^3 )×7.2
    (1-0.5×〖0.208〗^2+〖0.208〗^3 )×0.75
    (1-0.5×〖0.48〗^2+〖0.48〗^3 )×1.8
    9.225×7.2+29.26
    9.225×7.2+6.07×7.2+7.2×2.30+37.9=
    11.72×7.2+7.2×2.30
    7.71×7.2+11.72×7.2＋7.2×2.30=
    (1-0.5×〖0.203〗^2+〖0.203〗^3 )×6.15=
    (1-0.5×〖0.48〗^2+〖0.48〗^3 )×14.76=
    (1-0.5×〖0.208〗^2+〖0.208〗^3 )×7.815=
    (1-0.5×〖0.48〗^2+〖0.48〗^3 )×18.75=
    (1-2×〖0.208〗^2+〖0.208〗^3 )×7.815=
    (1-2×〖0.48〗^2+〖0.48〗^3 )×18.75
    (1-2×〖0.48〗^2+〖0.48〗^3 )×11.72=
    ½×2×（4-12÷5）
    lg3
    3.124^3/6*69.903+10*3.124^3/6-(10/6*5.224^3+10.3*9.824+161.57*8.724+41.1*5.874+4.57*(1.3/3+2.1+3.124)+(38.65*5.224^2/2)+5.224^2/6*(6.855+3*3.124))

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