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    1.2x-x=5
    X^3-(367.5-0.0003454657×100^2-2.1275(40-45))X^2-46.6573×100^2=0
    1.2x-x=5
    X^3-(367.5-0.0003454657×100^2-2.1275(15-45))X^2-46.6573×100^2=0
    X^3-(367.5-0.0003454657×100^2-2.1275(5-45))X^2-46.6573×100^2=0
    A-(185000*((77.82*10^-3)^2)*92.06^2)/(24*A^2)=420-(185000*((77.82*10^-3)^2)*92.06^2)/(24*420^2)-(11.5*10^-6)*185000*(-5+5-10)
    A-(185000*((77.82*10^-3)^2)*92.06^2)/(24*A^2)=420-(185000*((77.82*10^-3)^2)*92.06^2)/(24*420^2)-(11.5*10^-6)*185000*(0+5-10)
    A-(185000*((77.82*10^-3)^2)*92.06^2)/(24*A^2)=420-(185000*((77.82*10^-3)^2)*92.06^2)/(24*420^2)-(11.5*10^-6)*185000*(5+5-10)
    A-(185000*((77.82*10^-3)^2)*92.06^2)/(24*A^2)=420-(185000*((77.82*10^-3)^2)*92.06^2)/(24*420^2)-(11.5*10^-6)*185000*(10+5-10)
    A-(185000*((77.82*10^-3)^2)*92.06^2)/(24*A^2)=420-(185000*((77.82*10^-3)^2)*92.06^2)/(24*420^2)-(11.5*10^-6)*185000*(15+5-10)
    X^3-(420-0.0002646×92.06^2-2.1275(5-20))X^2-46.6573×92.06^2=0
    A-(185000*((77.82*10^-3)^2)*92.06^2)/(24*A^2)=420-(185000*((77.82*10^-3)^2)*92.06^2)/(24*420^2)-(11.5*10^-6)*185000*(20+5-10)
    X^3-(420-0.0002646×92.06^2-2.1275(5-20))X^2-46.6573×92.06^2=0
    A-(185000*((77.82*10^-3)^2)*92.06^2)/(24*A^2)=420-(185000*((77.82*10^-3)^2)*92.06^2)/(24*420^2)-(11.5*10^-6)*185000*(25+5-10)
    X^3-(420-0.0002646×92.06^2-2.1275(0-20))X^2-46.6573×92.06^2=0
    A-(185000*((77.82*10^-3)^2)*92.06^2)/(24*A^2)=420-(185000*((77.82*10^-3)^2)*92.06^2)/(24*420^2)-(11.5*10^-6)*185000*(30+5-10)
    X^3-(420-0.0002646×92.06^2-2.1275(10-20))X^2-46.6573×92.06^2=0
    x^2+(x+0.5)^(1/2)-2=0
    A-(185000*((77.82*10^-3)^2)*92.06^2)/(24*A^2)=420-(185000*((77.82*10^-3)^2)*92.06^2)/(24*420^2)-(11.5*10^-6)*185000*(35+5-10)
    X^3-(420-0.0002646×92.06^2-2.1275(15-20))X^2-46.6573×92.06^2=0

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