6.6*6.6*10^(-28)*x^4+2*6.6*10^(-14)*x^3+(27*6.6*6.6*10^(-12)-2)*x^2+54*6.6*100*x+27*10^16=0
    6.6*6.6*10^(-28)*x^4+2*6.6*10^(-14)*x^3+(27*6.6*6.6*10^(-20)-2)*x^2+54*6.6*10^(-14)*x+27*10^16=0
    6.6*6.6*10^(-28)*x^4+2*6.6*10^(-14)*x^3+(9*6.6*6.6*10^(-12)-3)*x^2+18*6.6*100*x+90000000000000000=0
    6.6*6.6*10^(-28)*x^4+2*6.6*10^(-14)*x^3+(9*6.6*6.6*10^(-20)-2)*x^2+18*6.6*10^(-14)*x+900000000=0
    X^3+6X^2-3X-6=0
    6.6*6.6*10^(-28)*x^4+2*6.6*10^(-14)*x^3+(9*6.6*6.6*10^(-20)-2)*x^2+18*6.6*10^(-14)*x+900000000=0
    2s^3+23s^2+80s+35=0
    [1/(0.5x+1)]*[1/(0.5x+1)]
    [1/(0.5x+1)]*[1/(0.5x+1)]
    ( 1/0.5x+1)*(1/0.5x+1)
    x^3=1-x
    ( 1/0.5x+1)*(1/0.5x+1)
    x = 16500/167
    x = 16500/167
    3x*x＝10000-200x
    3x*x＝100000000-2000000x
    1/√x=1.74-2*lg(2*0.1/20+18.7/(22335.1120939*√x))
    8x-24/25x-40=1/4
    (0.14-X/0.14-0.1)=(-150-0/-150-100)
    (5X-1)/6=(7/3)

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