5x=6/7
    4375x^3-7.5x-24=0
    -10^8*e^(-x/(0.22*10^(-9)))-5*10^(-21)/37.68*(1/x^2+1/(x+8*10^(-9))^2-2/(x+4*10^(-9))^2)=0
    0.6556*x=2.5*ln(25000*2.593/1.006/x)+5.5
    x^(2)+40x＝1100
    0.5+0.25+0.125+0.5^x=1
    0.5+0.5^x=1
    2^x=3160000000
    x^(2)+2x*8%+0.64%=1
    2^x=25000
    0.6556*x-13.27=ln(x)
    ((1050-1147)^2+(1100-1147)^2+(1080-1147)^2+(1120-1147)^2+(1200-1147)^2+(1250-1147)^2+(1040-1147)^2+(1130-1147)^2+(1300-1147)^2+(1200-1147)^2)/9=
    (1050-1147)^2+(1100-1147)^2+(1080-1147)^2+(1120-1147)^2+(1200-1147)^2+(1250-1147)^2+(1040-1147)^2+(1130-1147)^2+(1300-1147)^2+(1200-1147)^2=
    x^3+4x^2-4=0
    2x^3+8x^2-8=0
    2x*x*x+8*x*x-8=0
    X^(2)+2x*0.006164=0.999962
    0.12343323=x(3.68-x)
    0.0771325=x(3.68-x)
    1.7/x=2.5*ln(0.025*x/(1.006*10^(-6)))+3.5

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